{"title":"Power Transmission • Pneumatics • Automatic Airflow Dampers","description":"","products":[{"product_id":"p-1192253","title":"MSV-86522PP 1\/4BSP 5 Way 2 Position Momentary Flat Push Button Pneumatic Mechanical Valve","description":"1. Steady performance, easy installation.\u003cbr\u003e2. This pneumatic mechanical valve is used for controlling pilots or diaphragms of larger valves or small cylinders or any pressure system that is alternatively pressurized and exhausted.\u003cbr\u003e","brand":"uxcell","offers":[{"title":"Default Title","offer_id":42110031298809,"sku":"a16042300ux0491","price":17.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0595\/2477\/6095\/products\/ux_a16042300ux0491_ux_g02.jpg?v=1638195960"},{"product_id":"p-1004445","title":"Air Pneumatic 2 Position 3 Way Roller Lever Mechanical Valve","description":"\u003cul\u003e \u003cli\u003e2 position 3 way mechanical valve. Mechanical valves are reversing valves controlled by external mechanical force. When the external force disappears, the valve will reset itself and reverse the direction. Normally used to control the output signal of pneumatic systems. Roller Lever mechanical valve.\u003c\/li\u003e \u003c\/ul\u003e","brand":"uxcell","offers":[{"title":"Default Title","offer_id":42153104769273,"sku":"a12022300ux0016","price":16.08,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0595\/2477\/6095\/products\/ux_a12022300ux0016_ux_g02.jpg?v=1638828251"},{"product_id":"p-1327258","title":"6\" Backdraft Damper Ducting Insert Backflow Preventer Draft Blocker w Clamp","description":"The backdraft damper is used to prevent the backflow of smoke or exhaust gas through air duct when the ventilation fan is off, it also prevents debris, dust and odor from entering your room. Widely used in dryers, extractors or range hoods, and other HVAC applications. You can install it in your home, kitchen, bathroom, office or living room which needs a ventilation system.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003cbr\u003eColor: Silver\u003cbr\u003eMaterial: 201 Stainless Steel\u003cbr\u003eOuter Diameter of Interface: 149 mm \/ 5.87 inch\u003cbr\u003eOverall Size: 190 x 190 x 42 mm \/ 7.48 x 7.48 x 1.65 inch (L*W*T)\u003cbr\u003ePacking List: 1 Set - 1 x Backdraft Damper, 1 x Aluminum Foil Tape, 1 x Clamp, 1 x Sponge Seal Strip, 1 x Glue, 2 x Gloves \u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eAdvantage\u003c\/strong\u003e\u003cbr\u003e1. Made of durable 201 Stainless Steel, which has high hardness and no rust, not easy to scratch and resist corrosion, moisture-proof and easy to clean, can be used for a long time;\u003cbr\u003e2. When the exhaust starts, the air pressure will push to open the valve for air discharging; after the exhaust stops, the damper valve will automatically close and remain closed all the time to prevent odor from entering your room, making your indoor environment full of fresh air.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eInstruction\u003c\/strong\u003e\u003cbr\u003e1. Apply sealing glue to seal strip and attach it to the bottom of the backdraft damper;\u003cbr\u003e2. Then Fix the damper to the vent hole on the wall with spring clips;\u003cbr\u003e3. Finally fit the the proper size of pipe hose with clamp to the return damper.\u003cbr\u003e\u003cstrong\u003e\u003cbr\u003eNOTE: Please confirm the outer diameter of the backdraft damper before placing an order.\u003c\/strong\u003e","brand":"Harfington","offers":[{"title":"Default Title","offer_id":43540122730745,"sku":"a22082600ux0640","price":20.23,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0595\/2477\/6095\/files\/ux_a22082600ux0640_ux_g03.jpg?v=1776691103"},{"product_id":"p-1327265","title":"7 Inch Metal Backdraft Damper, Airflow Backflow Preventer Vent Draft Blocker Duct Connector for Kitchen Bathroom Exhaust Fan HVAC, Red","description":"The backdraft damper is used to prevent the backflow of smoke or exhaust gas through air duct when the ventilation fan is off, it also prevents debris, dust and odor from entering your room. Widely used in dryers, extractors or range hoods, and other HVAC applications. You can install it in your home, kitchen, bathroom, office or living room which needs a ventilation system.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003cbr\u003eColor: Red\u003cbr\u003eMaterial: Iron\u003cbr\u003eOuter Diameter of Interface: 175 mm \/ 6.89 inch\u003cbr\u003eOverall Size: 220 x 220 x 45 mm \/ 8.66 x 8.66 x 1.77 inch (L*W*T)\u003cbr\u003ePacking List: 1 x Backdraft Damper\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eAdvantage\u003c\/strong\u003e\u003cbr\u003e1. Made of durable iron material, which has high hardness and not easy to scratch, resist corrosion, waterproof, moisture-proof and easy to clean, can be used for a long time;\u003cbr\u003e2. When the exhaust starts, the air pressure will push to open the valve for air discharging; after the exhaust stops, the damper valve will automatically close and remain closed all the time to prevent odor from entering your room, making your indoor environment full of fresh air.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eInstruction\u003c\/strong\u003e\u003cbr\u003e1. Fix the damper to the vent hole on the wall with spring clips;\u003cbr\u003e2. Then apply sealing glue around the bottom of the backdraft damper;\u003cbr\u003e3. Finally install the vent hose to the damper with pipe clamps and seal with tape if necessary.\u003cbr\u003e\u003cstrong\u003e\u003cbr\u003eNOTE: Please confirm the outer diameter of the backdraft damper before placing an order. Also, please note that sealing glue is not included.\u003c\/strong\u003e","brand":"Harfington","offers":[{"title":"Default Title","offer_id":43540123386105,"sku":"a22082600ux0655","price":22.93,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0595\/2477\/6095\/files\/ux_a22082600ux0655_ux_g03_7cd9b4ed-5ddc-4e65-9017-b65579dc70c2.jpg?v=1747973634"},{"product_id":"p-1327266","title":"4 Inch Backdraft Damper, Stainless Steel Flexible Airflow Ducting Insert Backflow Preventer Draft Blocker for Kitchen Bathroom Exhaust Fan, Silver","description":"The backdraft damper is used to prevent the backflow of smoke or exhaust gas through air duct when the ventilation fan is off, it also prevents debris, dust and odor from entering your room. Widely used in dryers, extractors or range hoods, and other HVAC applications. You can install it in your home, kitchen, bathroom, office or living room which needs a ventilation system.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003cbr\u003eColor: Silver\u003cbr\u003eMaterial: 201 Stainless Steel\u003cbr\u003eOuter Diameter of Interface: 98 mm \/ 3.86 inch\u003cbr\u003eOverall Size: 145 x 145 x 42 mm \/ 5.71 x 5.71 x 1.65 inch (L*W*T)\u003cbr\u003ePacking List: 1 x Backdraft Damper\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eAdvantage\u003c\/strong\u003e\u003cbr\u003e1. Made of durable 201 Stainless Steel, which has high hardness and no rust, not easy to scratch and resist corrosion, moisture-proof and easy to clean, can be used for a long time;\u003cbr\u003e2. When the exhaust starts, the air pressure will push to open the valve for air discharging; after the exhaust stops, the damper valve will automatically close and remain closed all the time to prevent odor from entering your room, making your indoor environment full of fresh air.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eInstruction\u003c\/strong\u003e\u003cbr\u003e1. Fix the damper to the vent hole on the wall with spring clips;\u003cbr\u003e2. Then apply sealing glue around the bottom of the backdraft damper;\u003cbr\u003e3. Finally install the vent hose to the damper with pipe clamps and seal with tape if necessary.\u003cbr\u003e\u003cstrong\u003e\u003cbr\u003eNOTE: Please confirm the outer diameter of the backdraft damper before placing an order. Also, please note that sealing glue is not included.\u003c\/strong\u003e","brand":"Harfington","offers":[{"title":"Default Title","offer_id":43540123910393,"sku":"a22082600ux0641","price":11.86,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0595\/2477\/6095\/files\/ux_a22082600ux0641_ux_g03.jpg?v=1747481475"},{"product_id":"p-1327267","title":"Backdraft Damper, Metal HVAC Ducting Insert Backflow Preventer Draft Blocker Duct Adaptor for Kitchen Bathroom Exhaust Fan","description":"The backdraft damper is used to prevent the backflow of smoke or exhaust gas through air duct when the ventilation fan is off, it also prevents debris, dust and odor from entering your room. Widely used in dryers, extractors or range hoods, and other HVAC applications. You can install it in your home, kitchen, bathroom, office or living room which needs a ventilation system.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003cbr\u003eColor: \u003cbr\u003eMaterial: \u003cbr\u003eOuter Diameter of Interface: \u003cbr\u003eOverall Size: \u003cbr\u003ePacking List:  x Backdraft Damper\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eAdvantage\u003c\/strong\u003e\u003cbr\u003e1. Made of durable iron material, which has high hardness and not easy to scratch, resist corrosion, waterproof, moisture-proof and easy to clean, can be used for a long time;\u003cbr\u003e2. When the exhaust starts, the air pressure will push to open the valve for air discharging; after the exhaust stops, the damper valve will automatically close and remain closed all the time to prevent odor from entering your room, making your indoor environment full of fresh air.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eInstruction\u003c\/strong\u003e\u003cbr\u003e1. Fix the damper to the vent hole on the wall with spring clips;\u003cbr\u003e2. Then apply sealing glue around the bottom of the backdraft damper;\u003cbr\u003e3. Finally install the vent hose to the damper with pipe clamps and seal with tape if necessary.\u003cbr\u003e\u003cstrong\u003e\u003cbr\u003eNOTE: Please confirm the outer diameter of the backdraft damper before placing an order. Also, please note that sealing glue is not included.\u003c\/strong\u003e","brand":"Harfington","offers":[{"title":"1","offer_id":43540124139769,"sku":"a22082600ux0645","price":11.22,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0595\/2477\/6095\/products\/ux_a22082600ux0645_ux_g03_1191400d-8e11-43da-9be9-2cb361fabeae.jpg?v=1669920601"},{"product_id":"p-1340000","title":"HVAC Duct Manual Volume Damper, Metal Adjustment Airflow Ducting Backdraft Damper Control for Air Ventilation System","description":"The manual volume damper is used for air volume regulation in an air ventilation system, widely used in HVAC industry. With that installed in your HVAC systems, you can easily control the air flow rate or close off an air duct if needed, to some extent, it will increase the energy efficiency of your system.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003cbr\u003eColor: \u003cbr\u003eMaterial: \u003cbr\u003eOuter Diameter of Interface: \u003cbr\u003eOverall Size: \u003cbr\u003ePacking List:  x Duct Manual Volume Damper\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eAdvantage\u003c\/strong\u003e\u003cbr\u003e1. Made of durable Galvanized Iron, which has high hardness and high temperature resistance, not easy to deform and corrosion, moisture-proof and fade resistant, can be used for a long time;\u003cbr\u003e2. The side is designed with a rotary handle, which can adjust the air volume from multiple angles and is easy to operate;\u003cbr\u003e3. The interface is smooth and flat, easy to disassemble and install. Silicone rubber ring design can prevent the air duct valve from leaking when it is closed.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eInstruction\u003c\/strong\u003e\u003cbr\u003eEasy to install, just simply slide the volume damper into the pipe you are attaching to, and fix with pipe clamp and tape.\u003cbr\u003e\u003cstrong\u003e\u003cbr\u003eNOTE: Please confirm the outer diameter of the volume damper before placing an order.\u003c\/strong\u003e","brand":"Harfington","offers":[{"title":"3 inch","offer_id":43604243546361,"sku":"a22082300ux0548","price":22.57,"currency_code":"USD","in_stock":true},{"title":"5 inch","offer_id":43604243251449,"sku":"a22082300ux0549","price":32.21,"currency_code":"USD","in_stock":true},{"title":"6 inch","offer_id":43604243218681,"sku":"a22082300ux0550","price":32.99,"currency_code":"USD","in_stock":true},{"title":"8 inch","offer_id":43604243448057,"sku":"a22082300ux0551","price":53.52,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0595\/2477\/6095\/products\/ux_a22082300ux0549_ux_g03.jpg?v=1672475227"},{"product_id":"p-1339999","title":"HVAC Duct Manual Volume Damper, Metal Adjustment Airflow Backdraft Damper Control for HVAC Air Balancing System","description":"The manual volume damper is used for air volume regulation in an air ventilation system, widely used in HVAC industry. With that installed in your HVAC systems, you can easily control the air flow rate or close off an air duct if needed, to some extent, it will increase the energy efficiency of your system.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003cbr\u003eColor: \u003cbr\u003eMaterial: \u003cbr\u003eOuter Diameter of Interface: \u003cbr\u003eOverall Size: \u003cbr\u003ePacking List:  x Duct Manual Volume Damper\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eAdvantage\u003c\/strong\u003e\u003cbr\u003e1. Made of durable Galvanized Iron, which has high hardness and high temperature resistance, not easy to deform and corrosion, moisture-proof and fade resistant, can be used for a long time;\u003cbr\u003e2. The side is designed with a rotary handle, which can adjust the air volume from multiple angles and is easy to operate; With smooth and flat interior design, can ventilate rapidly.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eInstruction\u003c\/strong\u003e\u003cbr\u003eEasy to install, just simply slide the volume damper into the pipe you are attaching to, and fix with pipe clamp and tape.\u003cbr\u003e\u003cstrong\u003e\u003cbr\u003eNOTE: Please confirm the outer diameter of the volume damper before placing an order.\u003c\/strong\u003e","brand":"Harfington","offers":[{"title":"5 inch","offer_id":48706416476409,"sku":"a22082300ux0553","price":34.37,"currency_code":"USD","in_stock":true},{"title":"6 inch","offer_id":48706416541945,"sku":"a22082300ux0554","price":48.18,"currency_code":"USD","in_stock":true},{"title":"8 inch","offer_id":48706416509177,"sku":"a22082300ux0555","price":61.72,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0595\/2477\/6095\/files\/ux_a22082300ux0553_ux_g03.jpg?v=1784877073"},{"product_id":"p-1340001","title":"HVAC Duct Manual Volume Damper, PP Adjustment Flame Retardant Airflow Backdraft Damper Control for HVAC Air Balancing System","description":"The manual volume damper is used for air volume regulation in an air ventilation system, widely used in HVAC industry. With that installed in your HVAC systems, you can easily control the air flow rate or close off an air duct if needed, to some extent, it will increase the energy efficiency of your system.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003cbr\u003eColor: \u003cbr\u003eMaterial: \u003cbr\u003eInner Diameter of Interface: \u003cbr\u003eOverall Size: \u003cbr\u003ePacking List:  x Duct Manual Volume Damper\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eAdvantage\u003c\/strong\u003e\u003cbr\u003e1. Made of thicken PP, which has high hardness and anti-drop, durable, not easy to deform and corrosion, moisture-proof and fade resistant, can be used for a long time;\u003cbr\u003e2. The side is designed with a rotary handle, which can adjust the air volume from multiple angles and is easy to operate;\u003cbr\u003e3. With a smooth and flat interior design, can ventilate rapidly.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eInstruction\u003c\/strong\u003e\u003cbr\u003eEasy to install, just simply slide the volume damper into the pipe you are attaching to, and fix with pipe clamp and tape.\u003cbr\u003e\u003cstrong\u003e\u003cbr\u003eNOTE: Please confirm the inner diameter of the air volume damper before placing an order.\u003c\/strong\u003e","brand":"Harfington","offers":[{"title":"3 inch","offer_id":48706418802937,"sku":"a22082300ux0556","price":12.12,"currency_code":"USD","in_stock":true},{"title":"4 inch","offer_id":48706418704633,"sku":"a22082300ux0557","price":18.47,"currency_code":"USD","in_stock":true},{"title":"6 inch","offer_id":48706418770169,"sku":"a22082300ux0558","price":33.68,"currency_code":"USD","in_stock":true},{"title":"8 inch","offer_id":48706418737401,"sku":"a22082300ux0559","price":50.39,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0595\/2477\/6095\/files\/ux_a22082300ux0557_ux_g03.jpg?v=1784877110"},{"product_id":"p-1491848","title":"Manual Control Volume Damper, Stainless Steel Backdraft Damper Handle for Air Duct, Airflow, Dryer Vent, Fan, HVAC","description":"The manual volume damper is used for air volume regulation in an air ventilation system, widely used in HVAC industry. With that installed in your HVAC systems, you can easily control the air flow rate or close off an air duct if needed, to some extent, it will increase the energy efficiency of your system.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eAdvantage\u003c\/strong\u003e\u003cbr\u003eMade of durable Stainless Steel, durable material for long-lasting performance. Constructed with sturdy components to ensure reliability, can be used for a long time. Smooth interface, easy disassembly. Manual operation of the adjustable valve allows easy and efficient adjustment of air volume according to specific needs. There is a rubber sealing ring inside our damper sleeve, which is airtight and can prevent from leaking when the air duct valve is closed.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eInstruction\u003c\/strong\u003e\u003cbr\u003eThe side design has a rotating handle, can adjust the air volume from multiple angles, easy to operate. Easy to install, simply slide it directly into your ventilation pipe, and then use the pipe clamp and tape for a secure fit.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eNotice\u003c\/strong\u003e \u003cbr\u003ePlease confirm the outer diameter of the backdraft damper before placing an order.","brand":"Harfington","offers":[{"title":"150*190mm","offer_id":48707344138489,"sku":"a24012500ux0492","price":40.31,"currency_code":"USD","in_stock":true},{"title":"200*190mm","offer_id":48707344105721,"sku":"a24012500ux0493","price":57.91,"currency_code":"USD","in_stock":true},{"title":"80*150mm","offer_id":48707344171257,"sku":"a24012500ux0491","price":23.63,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0595\/2477\/6095\/files\/ux_a24012500ux0493_ux_g03.jpg?v=1784893424"},{"product_id":"p-1493529","title":"Backdraft Damper, PVC Ducting Hose Airflow Insert Backflow Preventer Shutter, One-Way Draft Stopper for Kitchen Bathroom Exhaust Vent Fans","description":"Our return air dampers are suitable for residential and commercial applications and are fit for use in HVAC systems, exhaust fans and ventilation ducts. Whether in your home, office or industrial environment, this damper is a versatile solution for maintaining optimal air quality and temperature control.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eAdvantage\u003c\/strong\u003e\u003cbr\u003eDurable plastic material, durable performance and waterproof, to ensure reliability, can be used for a long time. Smooth interface and easy disassembly. With gravity shutter flap, effectively prevent the backdraft air flow, it is suitable for use together with solid plastic ducts or flexible ducts.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eInstruction\u003c\/strong\u003e\u003cbr\u003eEasy to install, simply slide it directly into your ventilation pipe, and then use the pipe clamp and tape for a secure fit.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eNotice\u003c\/strong\u003e\u003cbr\u003eThis backdraft damper is only suitable for horizontal installation, it will not function in vertical ducting.\u003cbr\u003ePlease confirm the outer diameter of the backdraft damper before placing an order.","brand":"Harfington","offers":[{"title":"152*125mm","offer_id":48707348857081,"sku":"a24012500ux0495","price":20.14,"currency_code":"USD","in_stock":true},{"title":"103*103mm","offer_id":48707348889849,"sku":"a24012500ux0494","price":11.31,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0595\/2477\/6095\/files\/ux_a24012500ux0495_ux_g03.jpg?v=1784893473"},{"product_id":"p-1388530","title":"3 Inch 4 Inch 5 Inch  Backdraft Damper, 1 Set ABS Flexible Airflow Inline Backflow Duct Adaptor Draft Blocker for Bathroom Exhaust Fan","description":"The backdraft damper is used to prevent the backflow of lampblack or exhaust gas through air duct when the ventilation fan is off, it also prevents debris, dust and odor from entering your room. Widely used in dryers, extractors or range hoods, and other HVAC applications. You can install it in your home, kitchen, bathroom, office or living room which needs a ventilation system.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003cbr\u003eColor: White, Yellow\u003cbr\u003eMaterial: Plastic, Metal, Aluminum Foil\u003cbr\u003eOuter Diameter of Interface: 80mm 100mm 120mm \/ 3 inch 4 inch 5 inch\u003cbr\u003eOverall Size: 160 x 160 mm \/ 6.3 x 6.3 inch (L*W)\u003cbr\u003ePacking List: 1 Set - 1 x Backdraft Damper with Glue*1, Screw*4, Aluminum Foil Tape*1\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eAdvantage\u003c\/strong\u003e\u003cbr\u003e1. Made of durable ABS plastic, which has waterproof and high hardness, not easy to scratch, oil resistant, high temperature resistant, moisture-proof and easy to clean, can be used for a long time;\u003cbr\u003e2. When the exhaust starts, the air pressure will push to open the valve for air discharging; after the exhaust stops, the damper valve will automatically close and remain closed all the time to prevent odor from entering your room, making your indoor environment full of fresh air.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eInstruction\u003c\/strong\u003e\u003cbr\u003e1. You can apply sealing glue around the bottom of the backdraft damper and fix it with screws to the vent hole on the wall;\u003cbr\u003e2. Finally install the vent hose(not included) to the damper and seal with tape if necessary.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eNOTE: Please confirm the outer diameter of the backdraft damper before placing an order.\u003c\/strong\u003e","brand":"Harfington","offers":[{"title":"Default Title","offer_id":48709165515001,"sku":"a23041300ux0695","price":17.92,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0595\/2477\/6095\/files\/ux_a23041300ux0695_ux_g03.jpg?v=1784920531"},{"product_id":"p-1480195","title":"2\" HVAC Duct Manual Volume Damper, PP Adjustment Flame Retardant Airflow Backdraft Damper Control for HVAC Air Balancing System, Beige","description":"The manual volume damper is used for air volume regulation in an air ventilation system, widely used in HVAC industry. With that installed in your HVAC systems, you can easily control the air flow rate or close off an air duct if needed, to some extent, it will increase the energy efficiency of your system.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003cbr\u003eColor: Beige\u003cbr\u003eMaterial: PP\u003cbr\u003eOuter Diameter of Interface: 56 mm \/ 2.2 Inch\u003cbr\u003eInner Diameter of Interface: 50 mm \/ 2 Inch\u003cbr\u003eOverall Size: 80 x 2.8 mm \/ 3.15 x 0.11 inch (L*T)\u003cbr\u003ePacking List: 1 x Duct Manual Volume Damper\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eAdvantage\u003c\/strong\u003e\u003cbr\u003e1. Made of thick PP Plastic, which has good hardness, durable, not easy to deform and corrosion, moisture proof and fade resistant, and can be used for a long time.\u003cbr\u003e2. The side is designed with a rotary handle, which can adjust the air volume from multiple angles and is easy to operate;\u003cbr\u003e3. With a smooth and flat interior design, can ventilate rapidly.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eInstruction\u003c\/strong\u003e\u003cbr\u003eEasy to install, just simply slide the volume damper into the pipe you are attaching to, and fix with pipe clamp and tape.\u003cbr\u003e\u003cstrong\u003e\u003cbr\u003eNOTE: Please confirm the inner diameter of the air volume damper before placing an order and the recommended temperature range is -10 - 70 centigrade.\u003c\/strong\u003e","brand":"Harfington","offers":[{"title":"Default Title","offer_id":48709165646073,"sku":"a23103000ux0525","price":9.46,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0595\/2477\/6095\/files\/ux_a23103000ux0525_ux_g03.jpg?v=1784920545"},{"product_id":"p-1480194","title":"2\" HVAC Duct Manual Volume Damper, 2 Pack PP Adjustment Flame Retardant Airflow Backdraft Damper Control for HVAC Air Balancing System, Beige","description":"The manual volume damper is used for air volume regulation in an air ventilation system, widely used in HVAC industry. With that installed in your HVAC systems, you can easily control the air flow rate or close off an air duct if needed, to some extent, it will increase the energy efficiency of your system.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003cbr\u003eColor: Beige\u003cbr\u003eMaterial: PP\u003cbr\u003eInner Diameter of Interface: 50 mm \/ 2 Inch\u003cbr\u003eOverall Size: 80 x 2.8 mm \/ 3.15 x 0.11 inch (L*T)\u003cbr\u003ePacking List: 2 x Duct Manual Volume Damper\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eAdvantage\u003c\/strong\u003e\u003cbr\u003e1. Made of thick PP Plastic, which has good hardness, durable, not easy to deform and corrosion, moisture proof and fade resistant, and can be used for a long time.\u003cbr\u003e2. The side is designed with a rotary handle, which can adjust the air volume from multiple angles and is easy to operate;\u003cbr\u003e3. With a smooth and flat interior design, can ventilate rapidly.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eInstruction\u003c\/strong\u003e\u003cbr\u003eEasy to install, just simply slide the volume damper into the pipe you are attaching to, and fix with pipe clamp and tape.\u003cbr\u003e\u003cstrong\u003e\u003cbr\u003eNOTE: Please confirm the inner diameter of the air volume damper before placing an order and the recommended temperature range is -10 - 70 centigrade.\u003c\/strong\u003e","brand":"Harfington","offers":[{"title":"Default Title","offer_id":48709165809913,"sku":"a23103000ux0526","price":11.55,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0595\/2477\/6095\/files\/ux_a23103000ux0526_ux_g03.jpg?v=1784920557"},{"product_id":"p-1480188","title":"2.5\" HVAC Duct Manual Volume Damper, PP Adjustment Flame Retardant Airflow Backdraft Damper Control for HVAC Air Balancing System, Beige","description":"The manual volume damper is used for air volume regulation in an air ventilation system, widely used in HVAC industry. With that installed in your HVAC systems, you can easily control the air flow rate or close off an air duct if needed, to some extent, it will increase the energy efficiency of your system.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003cbr\u003eColor: Beige\u003cbr\u003eMaterial: PP\u003cbr\u003eInner Diameter of Interface: 63 mm \/ 2.5 Inch\u003cbr\u003eOverall Size: 120 x 3.8 mm \/ 4.72 x 0.15 inch (L*T)\u003cbr\u003ePacking List: 1 x Duct Manual Volume Damper\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eAdvantage\u003c\/strong\u003e\u003cbr\u003e1. Made of thick PP Plastic, which has good hardness, durable, not easy to deform and corrosion, moisture proof and fade resistant, and can be used for a long time.\u003cbr\u003e2. The side is designed with a rotary handle, which can adjust the air volume from multiple angles and is easy to operate;\u003cbr\u003e3. With a smooth and flat interior design, can ventilate rapidly.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eInstruction\u003c\/strong\u003e\u003cbr\u003eEasy to install, just simply slide the volume damper into the pipe you are attaching to, and fix with pipe clamp and tape.\u003cbr\u003e\u003cstrong\u003e\u003cbr\u003eNOTE: Please confirm the inner diameter of the air volume damper before placing an order and the recommended temperature range is -10 - 70 centigrade.\u003c\/strong\u003e","brand":"Harfington","offers":[{"title":"Default Title","offer_id":48709166465273,"sku":"a23103000ux0527","price":10.68,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0595\/2477\/6095\/files\/ux_a23103000ux0527_ux_g03.jpg?v=1784920568"},{"product_id":"p-1480189","title":"2.5\" HVAC Duct Manual Volume Damper, 2 Pack PP Adjustment Flame Retardant Airflow Backdraft Damper Control for HVAC Air Balancing System, Beige","description":"The manual volume damper is used for air volume regulation in an air ventilation system, widely used in HVAC industry. With that installed in your HVAC systems, you can easily control the air flow rate or close off an air duct if needed, to some extent, it will increase the energy efficiency of your system.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003cbr\u003eColor: Beige\u003cbr\u003eMaterial: PP\u003cbr\u003eInner Diameter of Interface: 63 mm \/ 2.5 Inch\u003cbr\u003eOverall Size: 120 x 3.8 mm \/ 4.72 x 0.15 inch (L*T)\u003cbr\u003ePacking List: 2 x Duct Manual Volume Damper\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eAdvantage\u003c\/strong\u003e\u003cbr\u003e1. Made of thick PP Plastic, which has good hardness, durable, not easy to deform and corrosion, moisture proof and fade resistant, and can be used for a long time.\u003cbr\u003e2. The side is designed with a rotary handle, which can adjust the air volume from multiple angles and is easy to operate;\u003cbr\u003e3. With a smooth and flat interior design, can ventilate rapidly.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eInstruction\u003c\/strong\u003e\u003cbr\u003eEasy to install, just simply slide the volume damper into the pipe you are attaching to, and fix with pipe clamp and tape.\u003cbr\u003e\u003cstrong\u003e\u003cbr\u003eNOTE: Please confirm the inner diameter of the air volume damper before placing an order and the recommended temperature range is -10 - 70 centigrade.\u003c\/strong\u003e","brand":"Harfington","offers":[{"title":"Default Title","offer_id":48709166563577,"sku":"a23103000ux0528","price":13.72,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0595\/2477\/6095\/files\/ux_a23103000ux0528_ux_g03.jpg?v=1784920581"},{"product_id":"p-1480197","title":"3\" HVAC Duct Manual Volume Damper, 2 Pack PP Adjustment Flame Retardant Airflow Backdraft Damper Control for HVAC Air Balancing System, Beige","description":"The manual volume damper is used for air volume regulation in an air ventilation system, widely used in HVAC industry. With that installed in your HVAC systems, you can easily control the air flow rate or close off an air duct if needed, to some extent, it will increase the energy efficiency of your system.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003cbr\u003eColor: Beige\u003cbr\u003eMaterial: PP\u003cbr\u003eInner Diameter of Interface: 75 mm \/ 3 Inch\u003cbr\u003eOverall Size: 130 x 4.5 mm \/ 5.12 x 0.18 inch (L*T)\u003cbr\u003ePacking List: 2 x Duct Manual Volume Damper\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eAdvantage\u003c\/strong\u003e\u003cbr\u003e1. Made of thick PP Plastic, which has good hardness, durable, not easy to deform and corrosion, moisture proof and fade resistant, and can be used for a long time.\u003cbr\u003e2. The side is designed with a rotary handle, which can adjust the air volume from multiple angles and is easy to operate;\u003cbr\u003e3. With a smooth and flat interior design, can ventilate rapidly.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eInstruction\u003c\/strong\u003e\u003cbr\u003eEasy to install, just simply slide the volume damper into the pipe you are attaching to, and fix with pipe clamp and tape.\u003cbr\u003e\u003cstrong\u003e\u003cbr\u003eNOTE: Please confirm the inner diameter of the air volume damper before placing an order and the recommended temperature range is -10 - 70 centigrade.\u003c\/strong\u003e","brand":"Harfington","offers":[{"title":"Default Title","offer_id":48709166792953,"sku":"a23103000ux0529","price":17.19,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0595\/2477\/6095\/files\/ux_a23103000ux0529_ux_g03.jpg?v=1784920592"},{"product_id":"p-1480200","title":"4.3\" HVAC Duct Manual Volume Damper, 2 Pack PP Adjustment Flame Retardant Airflow Backdraft Damper Control for HVAC Air Balancing System, Beige","description":"The manual volume damper is used for air volume regulation in an air ventilation system, widely used in HVAC industry. With that installed in your HVAC systems, you can easily control the air flow rate or close off an air duct if needed, to some extent, it will increase the energy efficiency of your system.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003cbr\u003eColor: Beige\u003cbr\u003eMaterial: PP\u003cbr\u003eInner Diameter of Interface: 110 mm \/ 4.3 Inch\u003cbr\u003eOverall Size: 153 x 4.5 mm \/ 6.02 x 0.18 inch (L*T)\u003cbr\u003ePacking List: 2 x Duct Manual Volume Damper\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eAdvantage\u003c\/strong\u003e\u003cbr\u003e1. Made of thick PP Plastic, which has good hardness, durable, not easy to deform and corrosion, moisture proof and fade resistant, and can be used for a long time.\u003cbr\u003e2. The side is designed with a rotary handle, which can adjust the air volume from multiple angles and is easy to operate;\u003cbr\u003e3. With a smooth and flat interior design, can ventilate rapidly.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eInstruction\u003c\/strong\u003e\u003cbr\u003eEasy to install, just simply slide the volume damper into the pipe you are attaching to, and fix with pipe clamp and tape.\u003cbr\u003e\u003cstrong\u003e\u003cbr\u003eNOTE: Please confirm the inner diameter of the air volume damper before placing an order and the recommended temperature range is -10 - 70 centigrade.\u003c\/strong\u003e","brand":"Harfington","offers":[{"title":"Default Title","offer_id":48709167186169,"sku":"a23103000ux0531","price":28.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0595\/2477\/6095\/files\/ux_a23103000ux0531_ux_g03.jpg?v=1784920613"},{"product_id":"p-1480196","title":"5\" HVAC Duct Manual Volume Damper, PP Adjustment Flame Retardant Airflow Backdraft Damper Control for HVAC Air Balancing System, Beige","description":"The manual volume damper is used for air volume regulation in an air ventilation system, widely used in HVAC industry. With that installed in your HVAC systems, you can easily control the air flow rate or close off an air duct if needed, to some extent, it will increase the energy efficiency of your system.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003cbr\u003eColor: Beige\u003cbr\u003eMaterial: PP\u003cbr\u003eInner Diameter of Interface: 125 mm \/ 5 Inch\u003cbr\u003eOverall Size: 162 x 4 mm \/ 6.38 x 0.16 inch (L*T)\u003cbr\u003ePacking List: 1 x Duct Manual Volume Damper\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eAdvantage\u003c\/strong\u003e\u003cbr\u003e1. Made of thick PP Plastic, which has good hardness, durable, not easy to deform and corrosion, moisture proof and fade resistant, and can be used for a long time.\u003cbr\u003e2. The side is designed with a rotary handle, which can adjust the air volume from multiple angles and is easy to operate;\u003cbr\u003e3. With a smooth and flat interior design, can ventilate rapidly.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eInstruction\u003c\/strong\u003e\u003cbr\u003eEasy to install, just simply slide the volume damper into the pipe you are attaching to, and fix with pipe clamp and tape.\u003cbr\u003e\u003cstrong\u003e\u003cbr\u003eNOTE: Please confirm the inner diameter of the air volume damper before placing an order and the recommended temperature range is -10 - 70 centigrade.\u003c\/strong\u003e","brand":"Harfington","offers":[{"title":"Default Title","offer_id":48709167612153,"sku":"a23103000ux0532","price":21.71,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0595\/2477\/6095\/files\/ux_a23103000ux0532_ux_g03.jpg?v=1784920624"},{"product_id":"p-1480206","title":"6.3\" Duct Manual Volume Damper, Airflow Backdraft Damper Control Valve Beige","description":"The manual volume damper is used for air volume regulation in an air ventilation system, widely used in HVAC industry. With that installed in your HVAC systems, you can easily control the air flow rate or close off an air duct if needed, to some extent, it will increase the energy efficiency of your system.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003cbr\u003eColor: Beige\u003cbr\u003eMaterial: PP\u003cbr\u003eInner Diameter of Interface: 160 mm \/ 6.3 Inch\u003cbr\u003eOverall Size: 185 x 4 mm \/ 7.28 x 0.16 inch (L*T)\u003cbr\u003ePacking List: 1 x Duct Manual Volume Damper\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eAdvantage\u003c\/strong\u003e\u003cbr\u003e1. Our damper sleeve features a rubber seal ring inside, providing good air tightness and it can prevent the air duct valve from leaking when it is closed. Also, this innovative design ensures smooth and silent operation when the flap board opens or closes.\u003cbr\u003e2. The side is designed with a rotary handle, which can adjust the air volume from multiple angles and is easy to operate;\u003cbr\u003e3. With a smooth and flat interior design, can ventilate rapidly.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eInstruction\u003c\/strong\u003e\u003cbr\u003eEasy to install, just simply slide the volume damper into the pipe you are attaching to, and fix with pipe clamp and tape.\u003cbr\u003e\u003cstrong\u003e\u003cbr\u003eNOTE: Please confirm the inner diameter of the air volume damper before placing an order and the recommended temperature range is -10 - 70 centigrade.\u003c\/strong\u003e","brand":"Harfington","offers":[{"title":"Default Title","offer_id":48709167677689,"sku":"a23103000ux0534","price":31.38,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0595\/2477\/6095\/files\/ux_a23103000ux0534_ux_g03.jpg?v=1784920639"},{"product_id":"p-1480191","title":"8\" HVAC Duct Manual Volume Damper, PP Adjustment Flame Retardant Airflow Backdraft Damper Control Valve for HVAC Air Balancing System, Beige","description":"The manual volume damper is used for air volume regulation in an air ventilation system, widely used in HVAC industry. With that installed in your HVAC systems, you can easily control the air flow rate or close off an air duct if needed, to some extent, it will increase the energy efficiency of your system.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003cbr\u003eColor: Beige\u003cbr\u003eMaterial: PP\u003cbr\u003eInner Diameter of Interface: 200 mm \/ 8 Inch\u003cbr\u003eOverall Size: 185 x 4 mm \/ 7.28 x 0.16 inch (L*T)\u003cbr\u003ePacking List: 1 x Duct Manual Volume Damper\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eAdvantage\u003c\/strong\u003e\u003cbr\u003e1. Our damper sleeve features a rubber seal ring inside, providing good air tightness and it can prevent the air duct valve from leaking when it is closed. Also, this innovative design ensures smooth and silent operation when the flap board opens or closes.\u003cbr\u003e2. The side is designed with a rotary handle, which can adjust the air volume from multiple angles and is easy to operate;\u003cbr\u003e3. With a smooth and flat interior design, can ventilate rapidly.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eInstruction\u003c\/strong\u003e\u003cbr\u003eEasy to install, just simply slide the volume damper into the pipe you are attaching to, and fix with pipe clamp and tape.\u003cbr\u003e\u003cstrong\u003e\u003cbr\u003eNOTE: Please confirm the inner diameter of the air volume damper before placing an order and the recommended temperature range is -10 - 70 centigrade.\u003c\/strong\u003e","brand":"Harfington","offers":[{"title":"Default Title","offer_id":48709167939833,"sku":"a23103000ux0535","price":42.39,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0595\/2477\/6095\/files\/ux_a23103000ux0535_ux_g03.jpg?v=1784920650"},{"product_id":"p-1480192","title":"2.5\" HVAC Duct Manual Volume Damper, PP Adjustment Flame Retardant Airflow Backdraft Damper Control for HVAC Air Balancing System, Dark Grey","description":"The manual volume damper is used for air volume regulation in an air ventilation system, widely used in HVAC industry. With that installed in your HVAC systems, you can easily control the air flow rate or close off an air duct if needed, to some extent, it will increase the energy efficiency of your system.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003cbr\u003eColor: Dark Grey\u003cbr\u003eMaterial: PP\u003cbr\u003eInner Diameter of Interface: 63 mm \/ 2.5 Inch\u003cbr\u003eOverall Size: 120 x 3.8 mm \/ 4.72 x 0.15 inch (L*T)\u003cbr\u003ePacking List: 1 x Duct Manual Volume Damper\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eAdvantage\u003c\/strong\u003e\u003cbr\u003e1. Made of thick PP Plastic, which has good hardness, durable, not easy to deform and corrosion, moisture proof and fade resistant, and can be used for a long time.\u003cbr\u003e2. The side is designed with a rotary handle, which can adjust the air volume from multiple angles and is easy to operate;\u003cbr\u003e3. With a smooth and flat interior design, can ventilate rapidly.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eInstruction\u003c\/strong\u003e\u003cbr\u003eEasy to install, just simply slide the volume damper into the pipe you are attaching to, and fix with pipe clamp and tape.\u003cbr\u003e\u003cstrong\u003e\u003cbr\u003eNOTE: Please confirm the inner diameter of the air volume damper before placing an order and the recommended temperature range is -10 - 70 centigrade.\u003c\/strong\u003e","brand":"Harfington","offers":[{"title":"Default Title","offer_id":48709168169209,"sku":"a23103000ux0537","price":10.68,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0595\/2477\/6095\/files\/ux_a23103000ux0537_ux_g03.jpg?v=1784920671"},{"product_id":"p-1480199","title":"3\" HVAC Duct Manual Volume Damper, PP Adjustment Flame Retardant Airflow Backdraft Damper Control for HVAC Air Balancing System, Dark Grey","description":"The manual volume damper is used for air volume regulation in an air ventilation system, widely used in HVAC industry. With that installed in your HVAC systems, you can easily control the air flow rate or close off an air duct if needed, to some extent, it will increase the energy efficiency of your system.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003cbr\u003eColor: Dark Grey\u003cbr\u003eMaterial: PP\u003cbr\u003eInner Diameter of Interface: 75 mm \/ 3 Inch\u003cbr\u003eOverall Size: 130 x 4.5 mm \/ 5.12 x 0.18 inch (L*T)\u003cbr\u003ePacking List: 1 x Duct Manual Volume Damper\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eAdvantage\u003c\/strong\u003e\u003cbr\u003e1. Made of thick PP Plastic, which has good hardness, durable, not easy to deform and corrosion, moisture proof and fade resistant, and can be used for a long time.\u003cbr\u003e2. The side is designed with a rotary handle, which can adjust the air volume from multiple angles and is easy to operate;\u003cbr\u003e3. With a smooth and flat interior design, can ventilate rapidly.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eInstruction\u003c\/strong\u003e\u003cbr\u003eEasy to install, just simply slide the volume damper into the pipe you are attaching to, and fix with pipe clamp and tape.\u003cbr\u003e\u003cstrong\u003e\u003cbr\u003eNOTE: Please confirm the inner diameter of the air volume damper before placing an order and the recommended temperature range is -10 - 70 centigrade.\u003c\/strong\u003e","brand":"Harfington","offers":[{"title":"Default Title","offer_id":48709168595193,"sku":"a23103000ux0538","price":11.8,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0595\/2477\/6095\/files\/ux_a23103000ux0538_ux_g03.jpg?v=1784920682"},{"product_id":"p-1480205","title":"3.5\" HVAC Duct Manual Volume Damper, PP Adjustment Flame Retardant Airflow Backdraft Damper Control for HVAC Air Balancing System, Dark Grey","description":"The manual volume damper is used for air volume regulation in an air ventilation system, widely used in HVAC industry. With that installed in your HVAC systems, you can easily control the air flow rate or close off an air duct if needed, to some extent, it will increase the energy efficiency of your system.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003cbr\u003eColor: Dark Grey\u003cbr\u003eMaterial: PP\u003cbr\u003eInner Diameter of Interface: 90 mm \/ 3.5 Inch\u003cbr\u003eOverall Size: 140 x 4 mm \/ 5.51 x 0.16 inch (L*T)\u003cbr\u003ePacking List: 1 x Duct Manual Volume Damper\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eAdvantage\u003c\/strong\u003e\u003cbr\u003e1. Made of thick PP Plastic, which has good hardness, durable, not easy to deform and corrosion, moisture proof and fade resistant, and can be used for a long time.\u003cbr\u003e2. The side is designed with a rotary handle, which can adjust the air volume from multiple angles and is easy to operate;\u003cbr\u003e3. With a smooth and flat interior design, can ventilate rapidly.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eInstruction\u003c\/strong\u003e\u003cbr\u003eEasy to install, just simply slide the volume damper into the pipe you are attaching to, and fix with pipe clamp and tape.\u003cbr\u003e\u003cstrong\u003e\u003cbr\u003eNOTE: Please confirm the inner diameter of the air volume damper before placing an order and the recommended temperature range is -10 - 70 centigrade.\u003c\/strong\u003e","brand":"Harfington","offers":[{"title":"Default Title","offer_id":48709169545465,"sku":"a23103000ux0539","price":14.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0595\/2477\/6095\/files\/ux_a23103000ux0539_ux_g03.jpg?v=1784920694"},{"product_id":"p-1480201","title":"4.3\" Duct Manual Volume Damper, Adjustment Airflow Backdraft Damper Dark Grey","description":"The manual volume damper is used for air volume regulation in an air ventilation system, widely used in HVAC industry. With that installed in your HVAC systems, you can easily control the air flow rate or close off an air duct if needed, to some extent, it will increase the energy efficiency of your system.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003cbr\u003eColor: Dark Grey\u003cbr\u003eMaterial: PP\u003cbr\u003eInner Diameter of Interface: 110 mm \/ 4.3 Inch\u003cbr\u003eOverall Size: 153 x 4.5 mm \/ 6.02 x 0.18 inch (L*T)\u003cbr\u003ePacking List: 1 x Duct Manual Volume Damper\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eAdvantage\u003c\/strong\u003e\u003cbr\u003e1. Made of thick PP Plastic, which has good hardness, durable, not easy to deform and corrosion, moisture proof and fade resistant, and can be used for a long time.\u003cbr\u003e2. The side is designed with a rotary handle, which can adjust the air volume from multiple angles and is easy to operate;\u003cbr\u003e3. With a smooth and flat interior design, can ventilate rapidly.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eInstruction\u003c\/strong\u003e\u003cbr\u003eEasy to install, just simply slide the volume damper into the pipe you are attaching to, and fix with pipe clamp and tape.\u003cbr\u003e\u003cstrong\u003e\u003cbr\u003eNOTE: Please confirm the inner diameter of the air volume damper before placing an order and the recommended temperature range is -10 - 70 centigrade.\u003c\/strong\u003e","brand":"Harfington","offers":[{"title":"Default Title","offer_id":48709170430201,"sku":"a23103000ux0540","price":18.19,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0595\/2477\/6095\/files\/ux_a23103000ux0540_ux_g03.jpg?v=1784920706"},{"product_id":"p-1480198","title":"5\" HVAC Duct Manual Volume Damper, Adjustment Airflow Backdraft Damper Dark Grey","description":"The manual volume damper is used for air volume regulation in an air ventilation system, widely used in HVAC industry. With that installed in your HVAC systems, you can easily control the air flow rate or close off an air duct if needed, to some extent, it will increase the energy efficiency of your system.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003cbr\u003eColor: Dark Grey\u003cbr\u003eMaterial: PP\u003cbr\u003eInner Diameter of Interface: 125 mm \/ 5 Inch\u003cbr\u003eOverall Size: 162 x 3.6 mm \/ 6.38 x 0.14 inch (L*T)\u003cbr\u003ePacking List: 1 x Duct Manual Volume Damper\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eAdvantage\u003c\/strong\u003e\u003cbr\u003e1. Made of thick PP Plastic, which has good hardness, durable, not easy to deform and corrosion, moisture proof and fade resistant, and can be used for a long time.\u003cbr\u003e2. The side is designed with a rotary handle, which can adjust the air volume from multiple angles and is easy to operate;\u003cbr\u003e3. With a smooth and flat interior design, can ventilate rapidly.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eInstruction\u003c\/strong\u003e\u003cbr\u003eEasy to install, just simply slide the volume damper into the pipe you are attaching to, and fix with pipe clamp and tape.\u003cbr\u003e\u003cstrong\u003e\u003cbr\u003eNOTE: Please confirm the inner diameter of the air volume damper before placing an order and the recommended temperature range is -10 - 70 centigrade.\u003c\/strong\u003e","brand":"Harfington","offers":[{"title":"Default Title","offer_id":48709171413241,"sku":"a23103000ux0541","price":21.71,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0595\/2477\/6095\/files\/ux_a23103000ux0541_ux_g03.jpg?v=1784920717"},{"product_id":"p-1480207","title":"6.3\" Duct Manual Volume Damper, Adjustment Airflow Backdraft Damper Dark Grey","description":"The manual volume damper is used for air volume regulation in an air ventilation system, widely used in HVAC industry. With that installed in your HVAC systems, you can easily control the air flow rate or close off an air duct if needed, to some extent, it will increase the energy efficiency of your system.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003cbr\u003eColor: Dark Grey\u003cbr\u003eMaterial: PP\u003cbr\u003eInner Diameter of Interface: 160 mm \/ 6.3 Inch\u003cbr\u003eOverall Size: 198 x 4 mm \/ 7.8 x 0.16 inch (L*T)\u003cbr\u003ePacking List: 1 x Duct Manual Volume Damper\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eAdvantage\u003c\/strong\u003e\u003cbr\u003e1. Made of thick PP Plastic, which has good hardness, durable, not easy to deform and corrosion, moisture proof and fade resistant, and can be used for a long time.\u003cbr\u003e2. The side is designed with a rotary handle, which can adjust the air volume from multiple angles and is easy to operate;\u003cbr\u003e3. With a smooth and flat interior design, can ventilate rapidly.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eInstruction\u003c\/strong\u003e\u003cbr\u003eEasy to install, just simply slide the volume damper into the pipe you are attaching to, and fix with pipe clamp and tape.\u003cbr\u003e\u003cstrong\u003e\u003cbr\u003eNOTE: Please confirm the inner diameter of the air volume damper before placing an order and the recommended temperature range is -10 - 70 centigrade.\u003c\/strong\u003e","brand":"Harfington","offers":[{"title":"Default Title","offer_id":48709172363513,"sku":"a23103000ux0542","price":30.48,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0595\/2477\/6095\/files\/ux_a23103000ux0542_ux_g03.jpg?v=1784920728"},{"product_id":"p-1480202","title":"4.3\" Duct Manual Volume Damper, Airflow Backdraft Damper Control Valve Dark Grey","description":"The manual volume damper is used for air volume regulation in an air ventilation system, widely used in HVAC industry. With that installed in your HVAC systems, you can easily control the air flow rate or close off an air duct if needed, to some extent, it will increase the energy efficiency of your system.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003cbr\u003eColor: Dark Grey\u003cbr\u003eMaterial: PP\u003cbr\u003eInner Diameter of Interface: 110 mm \/ 4.3 Inch\u003cbr\u003eOverall Size: 153 x 4.5 mm \/ 6.02 x 0.18 inch (L*T)\u003cbr\u003ePacking List: 1 x Duct Manual Volume Damper\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eAdvantage\u003c\/strong\u003e\u003cbr\u003e1. Our damper sleeve features a rubber seal ring inside, providing good air tightness and it can prevent the air duct valve from leaking when it is closed. Also, this innovative design ensures smooth and silent operation when the flap board opens or closes.\u003cbr\u003e2. The side is designed with a rotary handle, which can adjust the air volume from multiple angles and is easy to operate;\u003cbr\u003e3. With a smooth and flat interior design, can ventilate rapidly.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eInstruction\u003c\/strong\u003e\u003cbr\u003eEasy to install, just simply slide the volume damper into the pipe you are attaching to, and fix with pipe clamp and tape.\u003cbr\u003e\u003cstrong\u003e\u003cbr\u003eNOTE: Please confirm the inner diameter of the air volume damper before placing an order and the recommended temperature range is -10 - 70 centigrade.\u003c\/strong\u003e","brand":"Harfington","offers":[{"title":"Default Title","offer_id":48709173805305,"sku":"a23103000ux0544","price":21.05,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0595\/2477\/6095\/files\/ux_a23103000ux0544_ux_g03.jpg?v=1784920739"},{"product_id":"p-1480204","title":"6.3\" HVAC Duct Manual Volume Damper, PP Adjustment Flame Retardant Airflow Backdraft Damper Control Valve for HVAC Air Balancing System, Dark Grey","description":"The manual volume damper is used for air volume regulation in an air ventilation system, widely used in HVAC industry. With that installed in your HVAC systems, you can easily control the air flow rate or close off an air duct if needed, to some extent, it will increase the energy efficiency of your system.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003cbr\u003eColor: Dark Grey\u003cbr\u003eMaterial: PP\u003cbr\u003eInner Diameter of Interface: 160 mm \/ 6.3 Inch\u003cbr\u003eOverall Size: 198 x 4 mm \/ 7.8 x 0.16 inch (L*T)\u003cbr\u003ePacking List: 1 x Duct Manual Volume Damper\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eAdvantage\u003c\/strong\u003e\u003cbr\u003e1. Our damper sleeve features a rubber seal ring inside, providing good air tightness and it can prevent the air duct valve from leaking when it is closed. Also, this innovative design ensures smooth and silent operation when the flap board opens or closes.\u003cbr\u003e2. The side is designed with a rotary handle, which can adjust the air volume from multiple angles and is easy to operate;\u003cbr\u003e3. With a smooth and flat interior design, can ventilate rapidly.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eInstruction\u003c\/strong\u003e\u003cbr\u003eEasy to install, just simply slide the volume damper into the pipe you are attaching to, and fix with pipe clamp and tape.\u003cbr\u003e\u003cstrong\u003e\u003cbr\u003eNOTE: Please confirm the inner diameter of the air volume damper before placing an order and the recommended temperature range is -10 - 70 centigrade.\u003c\/strong\u003e","brand":"Harfington","offers":[{"title":"Default Title","offer_id":48709175410937,"sku":"a23103000ux0545","price":33.07,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0595\/2477\/6095\/files\/ux_a23103000ux0545_ux_g03.jpg?v=1784920751"},{"product_id":"p-1491853","title":"4 Inch Backdraft Damper Control Valve, Duct Manual Volume Adjustment Airflow Ducting for Fan Airflow, Dryer Vent, Range Hood, White","description":"The manual volume damper is used for air volume regulation in an air ventilation system, widely used in industry. It can be used in exhaust fan ducts, dryer exhaust ports, fan airflow, vents and other residential and industrial applications, you can easily control the air flow rate or close off an air duct if needed. To some extent, it will increase the energy efficiency of your system.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003cbr\u003eColor: White\u003cbr\u003eMaterial: PVC\u003cbr\u003eOuter Diameter of Interface: 96 mm \/ 3.94 inch\u003cbr\u003eInner Diameter of Interface: 92 mm \/ 3.62 inch\u003cbr\u003ePacking List: 1 pcs Duct Manual Volume Damper\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eAdvantage\u003c\/strong\u003e\u003cbr\u003eMade of durable PVC material, environmental protection, easy to process, not easy to deformation and corrosion, moisture resistance and fading, can be used for a long time. The side design has a rotating handle, can adjust the air volume from multiple angles, easy to operate. Smooth interface, easy disassembly. Manual operation of the adjustable valve allows easy and efficient adjustment of air volume according to specific needs.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eInstruction\u003c\/strong\u003e\u003cbr\u003eEasy to install, just simply slide the volume damper into the pipe you are attaching to, and fix with pipe clamp and tape.\u003cbr\u003e\u003cstrong\u003e\u003cbr\u003eNotice: \u003c\/strong\u003e\u003cbr\u003ePlease confirm the outer diameter of the backdraft damper before placing an order.","brand":"Harfington","offers":[{"title":"Default Title","offer_id":48709176099065,"sku":"a24012100ux0474","price":16.65,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0595\/2477\/6095\/files\/ux_a24012100ux0474_ux_g03.jpg?v=1784920762"},{"product_id":"p-1491850","title":"4 Inch Backdraft Damper Control Valve, 2 Pcs Duct Manual Volume Adjustment Airflow Ducting for Fan Airflow, Dryer Vent, Range Hood, White","description":"The manual volume damper is used for air volume regulation in an air ventilation system, widely used in industry. It can be used in exhaust fan ducts, dryer exhaust ports, fan airflow, vents and other residential and industrial applications, you can easily control the air flow rate or close off an air duct if needed. To some extent, it will increase the energy efficiency of your system.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003cbr\u003eColor: White\u003cbr\u003eMaterial: PVC\u003cbr\u003eOuter Diameter of Interface: 96 mm \/ 3.94 inch\u003cbr\u003eInner Diameter of Interface: 92 mm \/ 3.62 inch\u003cbr\u003ePacking List: 2 pcs Duct Manual Volume Damper\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eAdvantage\u003c\/strong\u003e\u003cbr\u003eMade of durable PVC material, environmental protection, easy to process, not easy to deformation and corrosion, moisture resistance and fading, can be used for a long time. The side design has a rotating handle, can adjust the air volume from multiple angles, easy to operate. Smooth interface, easy disassembly. Manual operation of the adjustable valve allows easy and efficient adjustment of air volume according to specific needs.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eInstruction\u003c\/strong\u003e\u003cbr\u003eEasy to install, just simply slide the volume damper into the pipe you are attaching to, and fix with pipe clamp and tape.\u003cbr\u003e\u003cstrong\u003e\u003cbr\u003eNotice: \u003c\/strong\u003e\u003cbr\u003ePlease confirm the outer diameter of the volume damper before placing an order.","brand":"Harfington","offers":[{"title":"Default Title","offer_id":48709176918265,"sku":"a24012100ux0475","price":25.6,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0595\/2477\/6095\/files\/ux_a24012100ux0475_ux_g03.jpg?v=1784920775"},{"product_id":"p-1493531","title":"4 Inch Backdraft Damper, 2Pcs PVC Ducting Hose Airflow Insert Backflow Preventer Shutter, One-Way Draft Stopper for Kitchen Bathroom Exhaust Vent Fans","description":"Our return air dampers are suitable for residential and commercial applications and are fit for use in HVAC systems, exhaust fans and ventilation ducts. Whether in your home, office or industrial environment, this damper is a versatile solution for maintaining optimal air quality and temperature control.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003cbr\u003eMaterial: PVC\u003cbr\u003eColor: White\u003cbr\u003eInner Diameter of Interface: 100 mm \/ 3.9 Inch\u003cbr\u003eOuter Diameter of Interface: 103 mm \/ 4.1 Inch\u003cbr\u003eLength: 103 mm \/ 4.1 Inch\u003cbr\u003ePacking List: 2 pcs Backdraft Damper\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eAdvantage\u003c\/strong\u003e\u003cbr\u003eDurable plastic material, durable performance and waterproof, to ensure reliability, can be used for a long time. Smooth interface and easy disassembly. With gravity shutter flap, effectively prevent the backdraft air flow, it is suitable for use together with solid plastic ducts or flexible ducts.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eInstruction\u003c\/strong\u003e\u003cbr\u003eEasy to install, simply slide it directly into your ventilation pipe, and then use the pipe clamp and tape for a secure fit.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eNotice\u003c\/strong\u003e\u003cbr\u003eThis backdraft damper is only suitable for horizontal installation, it will not function in vertical ducting.\u003cbr\u003ePlease confirm the outer diameter of the backdraft damper before placing an order.","brand":"Harfington","offers":[{"title":"Default Title","offer_id":48709177835769,"sku":"a24012500ux0496","price":18.18,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0595\/2477\/6095\/files\/ux_a24012500ux0496_ux_g03.jpg?v=1784920789"},{"product_id":"p-1493565","title":"6 Inch Backdraft Damper, 2 Pcs PVC Ducting Hose Airflow Insert Backflow Preventer Shutter, One-Way Draft Stopper for Kitchen Bathroom Exhaust Vent Fan","description":"Our return air dampers are suitable for residential and commercial applications and are fit for use in HVAC systems, exhaust fans and ventilation ducts. Whether in your home, office or industrial environment, this damper is a versatile solution for maintaining optimal air quality and temperature control.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003cbr\u003eMaterial: PVC\u003cbr\u003eColor: White\u003cbr\u003eInner Diameter of Interface: 146 mm \/ 5.7 Inch\u003cbr\u003eOuter Diameter of Interface: 152 mm \/ 6.0 Inch\u003cbr\u003eLength: 125 mm \/ 4.9 Inch\u003cbr\u003ePacking List: 2 pcs Backdraft Damper\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eAdvantage\u003c\/strong\u003e\u003cbr\u003eDurable plastic material, durable performance and waterproof, to ensure reliability, can be used for a long time. Smooth interface and easy disassembly. With gravity shutter flap, effectively prevent the backdraft air flow, it is suitable for use together with solid plastic ducts or flexible ducts.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eInstruction\u003c\/strong\u003e\u003cbr\u003eEasy to install, simply slide it directly into your ventilation pipe, and then use the pipe clamp and tape for a secure fit.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eNotice\u003c\/strong\u003e\u003cbr\u003eThis backdraft damper is only suitable for horizontal installation, it will not function in vertical ducting.\u003cbr\u003ePlease confirm the outer diameter of the backdraft damper before placing an order.","brand":"Harfington","offers":[{"title":"Default Title","offer_id":48709181145337,"sku":"a24012500ux0497","price":32.97,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0595\/2477\/6095\/files\/ux_a24012500ux0497_ux_g03.jpg?v=1784920803"},{"product_id":"p-1578092","title":"3\" Duct Damper, Stainless Steel Motorized Adjustable HVAC Volume Dampers Airflow Backdraft Damper Control for HVAC Air Balancing System","description":"The motorized volume damper is used for air volume regulation in an air ventilation system, widely used in HVAC industry. With that installed in your HVAC systems, you can easily control the air flow rate or close off an air duct if needed, to some extent, it will increase the energy efficiency of your system.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003cbr\u003eColor: Silver Tone\u003cbr\u003eMaterial: 201 Stainless Steel\u003cbr\u003eAC Current: 220V 24V\u003cbr\u003eDC Current: 24V 12V\u003cbr\u003eAdjustable Angle: 90 Degree\u003cbr\u003eInner Diameter of Interface: 75 mm \/ 3 Inch\u003cbr\u003eOverall Size: 150 x 1 mm \/ 6 x 0.04 inch (L*T)\u003cbr\u003ePacking List: 1 x Duct Motorized Volume Damper\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eAdvantage\u003c\/strong\u003e\u003cbr\u003e1. Made of thick 201 stainless steel, which has good hardness, durable, not easy to deform and corrosion, moisture proof and rust resistant, and can be used for a long time.\u003cbr\u003e2. The damper can be adjusted to regulate the volume of air passing through the duct, providing flexibility in HVAC system balancing.The damper can be adjusted up to 90 degrees.\u003cbr\u003e3. With its airflow backdraft prevention feature, the damper with silicone sealing ring ensures that air flows in the desired direction, preventing unwanted drafts or air leakage.\u003cbr\u003e4. The automatic open or close design can provide effective control over the controlled environment, offering benefits of comfort, energy efficiency, and noiseless operation.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eInstruction\u003c\/strong\u003e\u003cbr\u003eThe damper is equipped with a motorized mechanism, allowing for precise and convenient control of airflow. Easy to install, just simply slide the volume damper into the pipe you are attaching to, and fix it with pipe clamp and tape. (pipe clamp and tape are not included here)\u003cbr\u003e\u003cstrong\u003e\u003cbr\u003eNOTE: Please confirm the inner diameter of the air volume damper before placing an order and the recommended temperature range is -10 - 70 centigrade.\u003c\/strong\u003e","brand":"Harfington","offers":[{"title":"Default Title","offer_id":48709183209721,"sku":"a24090900ux1526","price":26.94,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0595\/2477\/6095\/files\/ux_a24090900ux1526_ux_g03.jpg?v=1784920820"},{"product_id":"p-1578082","title":"4\" Duct Damper, Stainless Steel Motorized Adjustable HVAC Volume Dampers Airflow Backdraft Damper Control for HVAC Air Balancing System, AC 24V","description":"The motorized volume damper is used for air volume regulation in an air ventilation system, widely used in HVAC industry. With that installed in your HVAC systems, you can easily control the air flow rate or close off an air duct if needed, to some extent, it will increase the energy efficiency of your system.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003cbr\u003eColor: Silver Tone\u003cbr\u003eMaterial: 201 Stainless Steel\u003cbr\u003ePower Supply: AC 24V\u003cbr\u003eAdjustable Angle: 90 Degree\u003cbr\u003eInner Diameter of Interface: 100 mm \/ 4 Inch\u003cbr\u003eOverall Size: 150 x 1 mm \/ 6 x 0.04 inch (L*T)\u003cbr\u003ePacking List: 1 x Duct Motorized Volume Damper\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eAdvantage\u003c\/strong\u003e\u003cbr\u003e1. Made of thick 201 stainless steel, which has good hardness, durable, not easy to deform and corrosion, moisture proof and rust resistant, and can be used for a long time.\u003cbr\u003e2. The damper can be adjusted to regulate the volume of air passing through the duct, providing flexibility in HVAC system balancing.The damper can be adjusted up to 90 degrees.\u003cbr\u003e3. With its airflow backdraft prevention feature, the damper with silicone sealing ring ensures that air flows in the desired direction, preventing unwanted drafts or air leakage.\u003cbr\u003e4. The automatic open or close design can provide effective control over the controlled environment, offering benefits of comfort, energy efficiency, and noiseless operation.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eInstruction\u003c\/strong\u003e\u003cbr\u003eThe damper is equipped with a motorized mechanism, allowing for precise and convenient control of airflow. Easy to install, just simply slide the volume damper into the pipe you are attaching to, and fix it with pipe clamp and tape. (pipe clamp and tape are not included here)\u003cbr\u003e\u003cstrong\u003e\u003cbr\u003eNOTE: Please confirm the inner diameter of the air volume damper before placing an order and the recommended temperature range is -10 - 70 centigrade.\u003c\/strong\u003e","brand":"Harfington","offers":[{"title":"Default Title","offer_id":48709183635705,"sku":"a24090900ux1527","price":31.29,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0595\/2477\/6095\/files\/ux_a24090900ux1527_ux_g03.jpg?v=1784920831"},{"product_id":"p-1578068","title":"5\" Duct Damper, Stainless Steel Motorized Adjustable HVAC Volume Dampers Airflow Backdraft Damper Control for HVAC Air Balancing System, AC 24V","description":"The motorized volume damper is used for air volume regulation in an air ventilation system, widely used in HVAC industry. With that installed in your HVAC systems, you can easily control the air flow rate or close off an air duct if needed, to some extent, it will increase the energy efficiency of your system.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003cbr\u003eColor: Silver Tone\u003cbr\u003eMaterial: 201 Stainless Steel\u003cbr\u003ePower Supply: AC 24V\u003cbr\u003eAdjustable Angle: 90 Degree\u003cbr\u003eInner Diameter of Interface: 125 mm \/ 5 Inch\u003cbr\u003eOverall Size: 190 x 1 mm \/ 7.5 x 0.04 inch (L*T)\u003cbr\u003ePacking List: 1 x Duct Motorized Volume Damper\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eAdvantage\u003c\/strong\u003e\u003cbr\u003e1. Made of thick 201 stainless steel, which has good hardness, durable, not easy to deform and corrosion, moisture proof and rust resistant, and can be used for a long time.\u003cbr\u003e2. The damper can be adjusted to regulate the volume of air passing through the duct, providing flexibility in HVAC system balancing.The damper can be adjusted up to 90 degrees.\u003cbr\u003e3. With its airflow backdraft prevention feature, the damper with silicone sealing ring ensures that air flows in the desired direction, preventing unwanted drafts or air leakage.\u003cbr\u003e4. The automatic open or close design can provide effective control over the controlled environment, offering benefits of comfort, energy efficiency, and noiseless operation.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eInstruction\u003c\/strong\u003e\u003cbr\u003eThe damper is equipped with a motorized mechanism, allowing for precise and convenient control of airflow. Easy to install, just simply slide the volume damper into the pipe you are attaching to, and fix it with pipe clamp and tape. (pipe clamp and tape are not included here)\u003cbr\u003e\u003cstrong\u003e\u003cbr\u003eNOTE: Please confirm the inner diameter of the air volume damper before placing an order and the recommended temperature range is -10 - 70 centigrade.\u003c\/strong\u003e","brand":"Harfington","offers":[{"title":"Default Title","offer_id":48709183766777,"sku":"a24090900ux1528","price":32.2,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0595\/2477\/6095\/files\/ux_a24090900ux1528_ux_g03.jpg?v=1784920841"},{"product_id":"p-1578084","title":"6\" Duct Damper, Stainless Steel Motorized Adjustable HVAC Volume Dampers Airflow Backdraft Damper Control for HVAC Air Balancing System, AC 24V","description":"The motorized volume damper is used for air volume regulation in an air ventilation system, widely used in HVAC industry. With that installed in your HVAC systems, you can easily control the air flow rate or close off an air duct if needed, to some extent, it will increase the energy efficiency of your system.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003cbr\u003eColor: Silver Tone\u003cbr\u003eMaterial: 201 Stainless Steel\u003cbr\u003ePower Supply: AC 24V\u003cbr\u003eAdjustable Angle: 90 Degree\u003cbr\u003eInner Diameter of Interface: 150 mm \/ 6 Inch\u003cbr\u003eOverall Size: 190 x 1 mm \/ 7.5 x 0.04 inch (L*T)\u003cbr\u003ePacking List: 1 x Duct Motorized Volume Damper\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eAdvantage\u003c\/strong\u003e\u003cbr\u003e1. Made of thick 201 stainless steel, which has good hardness, durable, not easy to deform and corrosion, moisture proof and rust resistant, and can be used for a long time.\u003cbr\u003e2. The damper can be adjusted to regulate the volume of air passing through the duct, providing flexibility in HVAC system balancing.The damper can be adjusted up to 90 degrees.\u003cbr\u003e3. With its airflow backdraft prevention feature, the damper with silicone sealing ring ensures that air flows in the desired direction, preventing unwanted drafts or air leakage.\u003cbr\u003e4. The automatic open or close design can provide effective control over the controlled environment, offering benefits of comfort, energy efficiency, and noiseless operation.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eInstruction\u003c\/strong\u003e\u003cbr\u003eThe damper is equipped with a motorized mechanism, allowing for precise and convenient control of airflow. Easy to install, just simply slide the volume damper into the pipe you are attaching to, and fix it with pipe clamp and tape. (pipe clamp and tape are not included here)\u003cbr\u003e\u003cstrong\u003e\u003cbr\u003eNOTE: Please confirm the inner diameter of the air volume damper before placing an order and the recommended temperature range is -10 - 70 centigrade.\u003c\/strong\u003e","brand":"Harfington","offers":[{"title":"Default Title","offer_id":48709183996153,"sku":"a24090900ux1529","price":45.16,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0595\/2477\/6095\/files\/ux_a24090900ux1529_ux_g03.jpg?v=1784920853"},{"product_id":"p-1578090","title":"2\" Duct Damper Flap, 304 Stainless Steel HVAC Manual Volume Dampers Airflow Backdraft Damper Control for HVAC Air Balancing System","description":"The duct damper flap is suitable for various HVAC air balancing systems, making it good for use in residential, commercial, and industrial applications. It can be used in HVAC system upgrades or renovations, air balancing projects, and more.  \u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003cbr\u003eColor: Silver Tone\u003cbr\u003eMaterial: 304 Stainless Steel\u003cbr\u003eOuter Diameter: 51 mm \/ 2 Inch\u003cbr\u003eThickness: 3mm \/ 0.12 Inch\u003cbr\u003ePacking List: 1 x duct damper flap \u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eAdvantage\u003c\/strong\u003e\u003cbr\u003e1. Made of 304 stainless steel, the damper flap is durable and resistant to corrosion, ensuring long-lasting performance.\u003cbr\u003e2. The damper flap features a silicone seal, which provides a tight seal to prevent air leakage and backdraft, ensuring efficient airflow control.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eInstruction\u003c\/strong\u003e\u003cbr\u003e1. Install our damper flap in the desired location within the HVAC duct system. 2. Adjust the control handle of your damper to the desired position, allowing for precise control of airflow.\u003cbr\u003e\u003cstrong\u003e\u003cbr\u003eNOTE: Please confirm the inner diameter of the air volume damper before placing an order and the recommended temperature range is -10 - 70 centigrade.\u003c\/strong\u003e","brand":"Harfington","offers":[{"title":"Default Title","offer_id":48709184225529,"sku":"a24090900ux1530","price":7.6,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0595\/2477\/6095\/files\/ux_a24090900ux1530_ux_g03.jpg?v=1784920863"},{"product_id":"p-1578085","title":"4\" Duct Damper Flap, 304 Stainless Steel HVAC Manual Volume Dampers Airflow Backdraft Damper Control for HVAC Air Balancing System","description":"The duct damper flap is suitable for various HVAC air balancing systems, making it good for use in residential, commercial, and industrial applications. It can be used in HVAC system upgrades or renovations, air balancing projects, and more.  \u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003cbr\u003eColor: Silver Tone\u003cbr\u003eMaterial: 304 Stainless Steel\u003cbr\u003eOuter Diameter: 100 mm \/ 4 Inch\u003cbr\u003eThickness: 3mm \/ 0.12 Inch\u003cbr\u003ePacking List: 1 x duct damper flap \u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eAdvantage\u003c\/strong\u003e\u003cbr\u003e1. Made of 304 stainless steel, the damper flap is durable and resistant to corrosion, ensuring long-lasting performance.\u003cbr\u003e2. The damper flap features a silicone seal, which provides a tight seal to prevent air leakage and backdraft, ensuring efficient airflow control.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eInstruction\u003c\/strong\u003e\u003cbr\u003e1. Install our damper flap in the desired location within the HVAC duct system. 2. Adjust the control handle of your damper to the desired position, allowing for precise control of airflow.\u003cbr\u003e\u003cstrong\u003e\u003cbr\u003eNOTE: Please confirm the inner diameter of the air volume damper before placing an order and the recommended temperature range is -10 - 70 centigrade.\u003c\/strong\u003e","brand":"Harfington","offers":[{"title":"Default Title","offer_id":48709184684281,"sku":"a24090900ux1532","price":9.61,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0595\/2477\/6095\/files\/ux_a24090900ux1532_ux_g03.jpg?v=1784920881"},{"product_id":"p-1578066","title":"6\" Duct Damper Flap, 304 Stainless Steel for HVAC Volume Dampers Airflow Control","description":"The duct damper flap is suitable for various HVAC air balancing systems, making it good for use in residential, commercial, and industrial applications. It can be used in HVAC system upgrades or renovations, air balancing projects, and more.  \u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003cbr\u003eColor: Silver Tone\u003cbr\u003eMaterial: 304 Stainless Steel\u003cbr\u003eOuter Diameter: 150 mm \/ 6 Inch\u003cbr\u003eThickness: 3mm \/ 0.12 Inch\u003cbr\u003ePacking List: 1 x duct damper flap \u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eAdvantage\u003c\/strong\u003e\u003cbr\u003e1. Made of 304 stainless steel, the damper flap is durable and resistant to corrosion, ensuring long-lasting performance.\u003cbr\u003e2. The damper flap features a silicone seal, which provides a tight seal to prevent air leakage and backdraft, ensuring efficient airflow control.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eInstruction\u003c\/strong\u003e\u003cbr\u003e1. Install our damper flap in the desired location within the HVAC duct system. 2. Adjust the control handle of your damper to the desired position, allowing for precise control of airflow.\u003cbr\u003e\u003cstrong\u003e\u003cbr\u003eNOTE: Please confirm the inner diameter of the air volume damper before placing an order and the recommended temperature range is -10 - 70 centigrade.\u003c\/strong\u003e","brand":"Harfington","offers":[{"title":"Default Title","offer_id":48709184749817,"sku":"a24090900ux1534","price":12.25,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0595\/2477\/6095\/files\/ux_a24090900ux1534_ux_g03.jpg?v=1784920892"},{"product_id":"p-1578086","title":"8\" Duct Damper Flap, 304 Stainless Steel HVAC Manual Volume Dampers Airflow Backdraft Damper Control for HVAC Air Balancing System","description":"The duct damper flap is suitable for various HVAC air balancing systems, making it good for use in residential, commercial, and industrial applications. It can be used in HVAC system upgrades or renovations, air balancing projects, and more.  \u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003cbr\u003eColor: Silver Tone\u003cbr\u003eMaterial: 304 Stainless Steel\u003cbr\u003eOuter Diameter: 200 mm \/ 8 Inch\u003cbr\u003eThickness: 3mm \/ 0.12 Inch\u003cbr\u003ePacking List: 1 x duct damper flap \u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eAdvantage\u003c\/strong\u003e\u003cbr\u003e1. Made of 304 stainless steel, the damper flap is durable and resistant to corrosion, ensuring long-lasting performance.\u003cbr\u003e2. The damper flap features a silicone seal, which provides a tight seal to prevent air leakage and backdraft, ensuring efficient airflow control.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eInstruction\u003c\/strong\u003e\u003cbr\u003e1. Install our damper flap in the desired location within the HVAC duct system. 2. Adjust the control handle of your damper to the desired position, allowing for precise control of airflow.\u003cbr\u003e\u003cstrong\u003e\u003cbr\u003eNOTE: Please confirm the inner diameter of the air volume damper before placing an order and the recommended temperature range is -10 - 70 centigrade.\u003c\/strong\u003e","brand":"Harfington","offers":[{"title":"Default Title","offer_id":48709185044729,"sku":"a24090900ux1535","price":15.94,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0595\/2477\/6095\/files\/ux_a24090900ux1535_ux_g03.jpg?v=1784920903"},{"product_id":"p-1578089","title":"3\" HVAC Duct Manual Volume Damper, Stainless Steel Adjustment Flame Retardant Airflow Backdraft Damper Control for HVAC Air Balancing System,","description":"The manual volume damper is used for air volume regulation in an air ventilation system, widely used in HVAC industry. With that installed in your HVAC systems, you can easily control the air flow rate or close off an air duct if needed, to some extent, it will increase the energy efficiency of your system.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003cbr\u003eColor: Silver Tone\u003cbr\u003eMaterial: 201 Stainless Steel\u003cbr\u003eInner Diameter of Interface: 76 mm \/ 3 Inch\u003cbr\u003eOverall Size: 150 x 1 mm \/ 6 x 0.04 inch (L*T)\u003cbr\u003ePacking List: 1 x Duct Manual Volume Damper\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eAdvantage\u003c\/strong\u003e\u003cbr\u003e1. Made of thick 201 stainless steel, which has good hardness, durable, not easy to deform and corrosion, moisture proof and rust resistant, and can be used for a long time.\u003cbr\u003e2. The side is designed with a rotary handle, which can adjust the air volume from multiple angles and is easy to operate;\u003cbr\u003e3. With a smooth and flat interior design, it can ventilate rapidly.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eInstruction\u003c\/strong\u003e\u003cbr\u003eEasy to install, just simply slide the volume damper into the pipe you are attaching to, and fix it with pipe clamp and tape. (pipe clamp and tape are not included here)\u003cbr\u003e\u003cstrong\u003e\u003cbr\u003eNOTE: Please confirm the inner diameter of the air volume damper before placing an order and the recommended temperature range is -10 - 70 centigrade.\u003c\/strong\u003e","brand":"Harfington","offers":[{"title":"Default Title","offer_id":48709185405177,"sku":"a24090900ux1536","price":21.35,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0595\/2477\/6095\/files\/ux_a24090900ux1536_ux_g03.jpg?v=1784920915"},{"product_id":"p-1578087","title":"5\" HVAC Duct Manual Volume Damper Stainless Steel Adjustment Airflow Control","description":"The manual volume damper is used for air volume regulation in an air ventilation system, widely used in HVAC industry. With that installed in your HVAC systems, you can easily control the air flow rate or close off an air duct if needed, to some extent, it will increase the energy efficiency of your system.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003cbr\u003eColor: Silver Tone\u003cbr\u003eMaterial: 201 Stainless Steel\u003cbr\u003eInner Diameter of Interface: 125 mm \/ 5 Inch\u003cbr\u003eOverall Size: 190 x 1 mm \/ 7.5 x 0.04 inch (L*T)\u003cbr\u003ePacking List: 1 x Duct Manual Volume Damper\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eAdvantage\u003c\/strong\u003e\u003cbr\u003e1. Made of thick 201 stainless steel, which has good hardness, durable, not easy to deform and corrosion, moisture proof and rust resistant, and can be used for a long time.\u003cbr\u003e2. The side is designed with a rotary handle, which can adjust the air volume from multiple angles and is easy to operate;\u003cbr\u003e3. With a smooth and flat interior design, it can ventilate rapidly.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eInstruction\u003c\/strong\u003e\u003cbr\u003eEasy to install, just simply slide the volume damper into the pipe you are attaching to, and fix it with pipe clamp and tape. (pipe clamp and tape are not included here)\u003cbr\u003e\u003cstrong\u003e\u003cbr\u003eNOTE: Please confirm the inner diameter of the air volume damper before placing an order and the recommended temperature range is -10 - 70 centigrade.\u003c\/strong\u003e","brand":"Harfington","offers":[{"title":"Default Title","offer_id":48709185700089,"sku":"a24090900ux1538","price":32.05,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0595\/2477\/6095\/files\/ux_a24090900ux1538_ux_g03.jpg?v=1784920941"},{"product_id":"p-1578093","title":"6\" HVAC Duct Manual Volume Damper, Stainless Steel Adjustment Flame Retardant Airflow Backdraft Damper Control for HVAC Air Balancing System,","description":"The manual volume damper is used for air volume regulation in an air ventilation system, widely used in HVAC industry. With that installed in your HVAC systems, you can easily control the air flow rate or close off an air duct if needed, to some extent, it will increase the energy efficiency of your system.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003cbr\u003eColor: Silver Tone\u003cbr\u003eMaterial: 201 Stainless Steel\u003cbr\u003eInner Diameter of Interface: 150 mm \/ 6 Inch\u003cbr\u003eOverall Size: 190 x 1 mm \/ 7.5 x 0.04 inch (L*T)\u003cbr\u003ePacking List: 1 x Duct Manual Volume Damper\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eAdvantage\u003c\/strong\u003e\u003cbr\u003e1. Made of thick 201 stainless steel, which has good hardness, durable, not easy to deform and corrosion, moisture proof and rust resistant, and can be used for a long time.\u003cbr\u003e2. The side is designed with a rotary handle, which can adjust the air volume from multiple angles and is easy to operate;\u003cbr\u003e3. With a smooth and flat interior design, it can ventilate rapidly.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eInstruction\u003c\/strong\u003e\u003cbr\u003eEasy to install, just simply slide the volume damper into the pipe you are attaching to, and fix it with pipe clamp and tape. (pipe clamp and tape are not included here)\u003cbr\u003e\u003cstrong\u003e\u003cbr\u003eNOTE: Please confirm the inner diameter of the air volume damper before placing an order and the recommended temperature range is -10 - 70 centigrade.\u003c\/strong\u003e","brand":"Harfington","offers":[{"title":"Default Title","offer_id":48709185863929,"sku":"a24090900ux1539","price":36.75,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0595\/2477\/6095\/files\/ux_a24090900ux1539_ux_g03.jpg?v=1784920951"},{"product_id":"p-1578067","title":"8\" HVAC Duct Manual Volume Damper, Stainless Steel Adjustment Flame Retardant Airflow Backdraft Damper Control for HVAC Air Balancing System,","description":"The manual volume damper is used for air volume regulation in an air ventilation system, widely used in HVAC industry. With that installed in your HVAC systems, you can easily control the air flow rate or close off an air duct if needed, to some extent, it will increase the energy efficiency of your system.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003cbr\u003eColor: Silver Tone\u003cbr\u003eMaterial: 201 Stainless Steel\u003cbr\u003eInner Diameter of Interface: 200 mm \/ 8 Inch\u003cbr\u003eOverall Size: 190 x 1 mm \/ 7.5 x 0.04 inch (L*T)\u003cbr\u003ePacking List: 1 x Duct Manual Volume Damper\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eAdvantage\u003c\/strong\u003e\u003cbr\u003e1. Made of thick 201 stainless steel, which has good hardness, durable, not easy to deform and corrosion, moisture proof and rust resistant, and can be used for a long time.\u003cbr\u003e2. The side is designed with a rotary handle, which can adjust the air volume from multiple angles and is easy to operate;\u003cbr\u003e3. With a smooth and flat interior design, it can ventilate rapidly.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eInstruction\u003c\/strong\u003e\u003cbr\u003eEasy to install, just simply slide the volume damper into the pipe you are attaching to, and fix it with pipe clamp and tape. (pipe clamp and tape are not included here)\u003cbr\u003e\u003cstrong\u003e\u003cbr\u003eNOTE: Please confirm the inner diameter of the air volume damper before placing an order and the recommended temperature range is -10 - 70 centigrade.\u003c\/strong\u003e","brand":"Harfington","offers":[{"title":"Default Title","offer_id":48709186748665,"sku":"a24090900ux1540","price":54.93,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0595\/2477\/6095\/files\/ux_a24090900ux1540_ux_g03.jpg?v=1784920962"},{"product_id":"p-1578088","title":"10\" HVAC Duct Manual Volume Damper Stainless Steel Adjustment Airflow Control","description":"The manual volume damper is used for air volume regulation in an air ventilation system, widely used in HVAC industry. With that installed in your HVAC systems, you can easily control the air flow rate or close off an air duct if needed, to some extent, it will increase the energy efficiency of your system.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003cbr\u003eColor: Silver Tone\u003cbr\u003eMaterial: 201 Stainless Steel\u003cbr\u003eInner Diameter of Interface: 250 mm \/ 10 Inch\u003cbr\u003eOverall Size: 240 x 1 mm \/ 9.5 x 0.04 inch (L*T)\u003cbr\u003ePacking List: 1 x Duct Manual Volume Damper\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eAdvantage\u003c\/strong\u003e\u003cbr\u003e1. Made of thick 201 stainless steel, which has good hardness, durable, not easy to deform and corrosion, moisture proof and rust resistant, and can be used for a long time.\u003cbr\u003e2. The side is designed with a rotary handle, which can adjust the air volume from multiple angles and is easy to operate;\u003cbr\u003e3. With a smooth and flat interior design, it can ventilate rapidly.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eInstruction\u003c\/strong\u003e\u003cbr\u003eEasy to install, just simply slide the volume damper into the pipe you are attaching to, and fix it with pipe clamp and tape. (pipe clamp and tape are not included here)\u003cbr\u003e\u003cstrong\u003e\u003cbr\u003eNOTE: Please confirm the inner diameter of the air volume damper before placing an order and the recommended temperature range is -10 - 70 centigrade.\u003c\/strong\u003e","brand":"Harfington","offers":[{"title":"Default Title","offer_id":48709186846969,"sku":"a24090900ux1541","price":85.84,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0595\/2477\/6095\/files\/ux_a24090900ux1541_ux_g03.jpg?v=1784920973"},{"product_id":"p-1860005","title":"2Pcs 3\" HVAC Duct Damper Manual Volume Backdraft Damper Airflow Control Valve","description":"HVAC duct manual air volume control valve is used to adjust and control the air volume in heating, ventilation, and air conditioning systems. To adjust the air volume in the HVAC system and balance the air flow distribution, thereby improving the energy efficiency of the system to a certain extent.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003cbr\u003eColor: Silver\u003cbr\u003eMaterial: Galvanized Iron, Silicone\u003cbr\u003eAdjustable Angle: 90 Degree\u003cbr\u003eThickness: 1 mm \/ 0.04 inch\u003cbr\u003eOuter Diameter: 77 mm \/ 3.1 inch\u003cbr\u003eLength: 200 mm \/ 8 inch\u003cbr\u003ePacking List: 1Pcs x Duct Manual Volume Damper\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eAdvantages\u003c\/strong\u003e\u003cbr\u003eDuct damper is made of durable galvanized iron, with high hardness, not easy to deform, anti-corrosion, high temperature resistance, anti-fading, and long service life.\u003cbr\u003eThe HVAC duct adopts a rotating handle design, which can adjust the air volume from multiple angles and accurately adjust the air flow rate to meet specific heating or cooling needs.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eInstruction\u003c\/strong\u003e\u003cbr\u003eEasy to install, just simply slide the volume damper into the pipe you are attaching to, and fix with pipe clamp and tape.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eNOTE: \u003c\/strong\u003ePlease confirm the outer diameter of the volume damper before placing an order.","brand":"Harfington","offers":[{"title":"Default Title","offer_id":48709187010809,"sku":"a25040700ux1001","price":41.07,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0595\/2477\/6095\/files\/ux_a25040700ux1001_ux_g03.jpg?v=1784920984"},{"product_id":"p-1860000","title":"2Pcs 4\" HVAC Duct Damper Manual Volume Backdraft Damper Airflow Control Valve","description":"HVAC duct manual air volume control valve is used to adjust and control the air volume in heating, ventilation, and air conditioning systems. To adjust the air volume in the HVAC system and balance the air flow distribution, thereby improving the energy efficiency of the system to a certain extent.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003cbr\u003eColor: Silver\u003cbr\u003eMaterial: Galvanized Iron, Silicone\u003cbr\u003eAdjustable Angle: 90 Degree\u003cbr\u003eThickness: 1 mm \/ 0.04 inch\u003cbr\u003eOuter Diameter: 97 mm \/ 3.9 inch\u003cbr\u003eLength: 200 mm \/ 8 inch\u003cbr\u003ePacking List: 1Pcs x Duct Manual Volume Damper\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eAdvantages\u003c\/strong\u003e\u003cbr\u003eDuct damper is made of durable galvanized iron, with high hardness, not easy to deform, anti-corrosion, high temperature resistance, anti-fading, and long service life.\u003cbr\u003eThe HVAC duct adopts a rotating handle design, which can adjust the air volume from multiple angles and accurately adjust the air flow rate to meet specific heating or cooling needs.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eInstruction\u003c\/strong\u003e\u003cbr\u003eEasy to install, just simply slide the volume damper into the pipe you are attaching to, and fix with pipe clamp and tape.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eNOTE: \u003c\/strong\u003ePlease confirm the outer diameter of the volume damper before placing an order.","brand":"Harfington","offers":[{"title":"Default Title","offer_id":48709188157689,"sku":"a25040700ux1002","price":40.67,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0595\/2477\/6095\/files\/ux_a25040700ux1002_ux_g03.jpg?v=1784920997"},{"product_id":"p-1859998","title":"2Pcs 5\" HVAC Duct Damper Manual Volume Backdraft Damper Airflow Control Valve","description":"HVAC duct manual air volume control valve is used to adjust and control the air volume in heating, ventilation, and air conditioning systems. To adjust the air volume in the HVAC system and balance the air flow distribution, thereby improving the energy efficiency of the system to a certain extent.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003cbr\u003eColor: Silver\u003cbr\u003eMaterial: Galvanized Iron, Silicone\u003cbr\u003eAdjustable Angle: 90 Degree\u003cbr\u003eThickness: 1 mm \/ 0.04 inch\u003cbr\u003eOuter Diameter: 121 mm \/ 4.8 inch\u003cbr\u003eLength: 200 mm \/ 8 inch\u003cbr\u003ePacking List: 1Pcs x Duct Manual Volume Damper\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eAdvantages\u003c\/strong\u003e\u003cbr\u003eDuct damper is made of durable galvanized iron, with high hardness, not easy to deform, anti-corrosion, high temperature resistance, anti-fading, and long service life.\u003cbr\u003eThe HVAC duct adopts a rotating handle design, which can adjust the air volume from multiple angles and accurately adjust the air flow rate to meet specific heating or cooling needs.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eInstruction\u003c\/strong\u003e\u003cbr\u003eEasy to install, just simply slide the volume damper into the pipe you are attaching to, and fix with pipe clamp and tape.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eNOTE: \u003c\/strong\u003ePlease confirm the outer diameter of the volume damper before placing an order.","brand":"Harfington","offers":[{"title":"Default Title","offer_id":48709188223225,"sku":"a25040700ux1003","price":55.63,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0595\/2477\/6095\/files\/ux_a25040700ux1003_ux_g03.jpg?v=1784921010"},{"product_id":"p-1859315","title":"2Pcs 6\" HVAC Duct Damper Manual Volume Backdraft Damper Airflow Control Valve","description":"HVAC duct manual air volume control valve is used to adjust and control the air volume in heating, ventilation, and air conditioning systems. To adjust the air volume in the HVAC system and balance the air flow distribution, thereby improving the energy efficiency of the system to a certain extent.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003cbr\u003eColor: Silver\u003cbr\u003eMaterial: Galvanized Iron, Silicone\u003cbr\u003eAdjustable Angle: 90 Degree\u003cbr\u003eThickness: 1 mm \/ 0.04 inch\u003cbr\u003eOuter Diameter: 147 mm \/ 5.9 inch\u003cbr\u003eLength: 200 mm \/ 8 inch\u003cbr\u003ePacking List: 1Pcs x Duct Manual Volume Damper\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eAdvantages\u003c\/strong\u003e\u003cbr\u003eDuct damper is made of durable galvanized iron, with high hardness, not easy to deform, anti-corrosion, high temperature resistance, anti-fading, and long service life.\u003cbr\u003eThe HVAC duct adopts a rotating handle design, which can adjust the air volume from multiple angles and accurately adjust the air flow rate to meet specific heating or cooling needs.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eInstruction\u003c\/strong\u003e\u003cbr\u003eEasy to install, just simply slide the volume damper into the pipe you are attaching to, and fix with pipe clamp and tape.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eNOTE: \u003c\/strong\u003ePlease confirm the outer diameter of the volume damper before placing an order.","brand":"Harfington","offers":[{"title":"Default Title","offer_id":48709188452601,"sku":"a25040700ux1004","price":58.43,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0595\/2477\/6095\/files\/ux_a25040700ux1004_ux_g03.jpg?v=1784921023"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0595\/2477\/6095\/collections\/MRO64b0c4a970f90y0fFbOrefajomkGa3JF8hoUS.jpg?v=1697171379","url":"https:\/\/www.harfington.com\/en-de\/collections\/automatic-airflow-dampers-c-301481.oembed?page=3","provider":"Harfington","version":"1.0","type":"link"}