Home Power TransmissionPneumaticsAutomatic Airflow Dampers
Harfington 4 Inch Backdraft Damper, Stainless Steel Flexible Airflow Ducting Insert Backflow Preventer Draft Blocker for Kitchen Bathroom Exhaust Fan, Silver

4 Inch Backdraft Damper, Stainless Steel Flexible Airflow Ducting Insert Backflow Preventer Draft Blocker for Kitchen Bathroom Exhaust Fan, Silver

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About this item
  • Outer Diameter of Interface: 98 mm / 3.86 inch; Overall Size: 145 x 145 x 42 mm / 5.71 x 5.71 x 1.65 inch (L*W*T); Color: Silver
  • Advantage: 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; 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 room full of fresh air.
  • Instruction: 1. Fix the damper to the vent hole on the wall with spring clips; 2. Then apply sealing glue around the bottom of the backdraft damper; 3. Finally install the vent hose to the damper with pipe clamps and seal with tape if necessary.
  • Note: Please confirm the outer diameter of the backdraft damper before placing an order. Also, please note that sealing glue is not included.
  • Application: 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.
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About this item
  • Outer Diameter of Interface: 98 mm / 3.86 inch; Overall Size: 145 x 145 x 42 mm / 5.71 x 5.71 x 1.65 inch (L*W*T); Color: Silver
  • Advantage: 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; 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 room full of fresh air.
  • Instruction: 1. Fix the damper to the vent hole on the wall with spring clips; 2. Then apply sealing glue around the bottom of the backdraft damper; 3. Finally install the vent hose to the damper with pipe clamps and seal with tape if necessary.
  • Note: Please confirm the outer diameter of the backdraft damper before placing an order. Also, please note that sealing glue is not included.
  • Application: 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.
Specification

Specification

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Product 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.

Specification
Color: Silver
Material: 201 Stainless Steel
Outer Diameter of Interface: 98 mm / 3.86 inch
Overall Size: 145 x 145 x 42 mm / 5.71 x 5.71 x 1.65 inch (L*W*T)
Packing List: 1 x Backdraft Damper

Advantage
1. 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;
2. 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.

Instruction
1. Fix the damper to the vent hole on the wall with spring clips;
2. Then apply sealing glue around the bottom of the backdraft damper;
3. Finally install the vent hose to the damper with pipe clamps and seal with tape if necessary.

NOTE: Please confirm the outer diameter of the backdraft damper before placing an order. Also, please note that sealing glue is not included.
Warning: Cancer and Reproductive Harm - www.P65Warnings.ca.gov.

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Description

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.

Specification
Color: Silver
Material: 201 Stainless Steel
Outer Diameter of Interface: 98 mm / 3.86 inch
Overall Size: 145 x 145 x 42 mm / 5.71 x 5.71 x 1.65 inch (L*W*T)
Packing List: 1 x Backdraft Damper

Advantage
1. 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;
2. 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.

Instruction
1. Fix the damper to the vent hole on the wall with spring clips;
2. Then apply sealing glue around the bottom of the backdraft damper;
3. Finally install the vent hose to the damper with pipe clamps and seal with tape if necessary.

NOTE: Please confirm the outer diameter of the backdraft damper before placing an order. Also, please note that sealing glue is not included.
Warning: Cancer and Reproductive Harm - www.P65Warnings.ca.gov.
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