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【Quality Material】The draft blocker backdraft damper is made of a Galvanized steel, the Axis are made of aluminum, while the spring are made of carbon steel. Rugged and corrosion-resistant to keep you venting smoothly
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【Innovative Features】The one-way airflow duct draft Stopper could Prevents cold wind and small bugs from entering the duct. Rubber ring ensures 100% closure and quietness
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【Wide Applications】Duct back draft valves can be inserted into ventilation dryer vent hose ducts. Designed for use with range hoods, bathroom fans, kitchen and other home HVAC applications.
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【Easy to Install】The backflow prevention valve is installed by pushing into the ventilation duct, either horizontally or vertically. When the disc is installed horizontally, the position of the spring should be horizontal so that the disc can be optimally opened and closed, and the same is true for vertical
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【Lightweight Valve Wings】The backdraft shuttervalve wings open under the pressure created by the airflow; when the air flows in the opposite direction, it is automatically closed under the action of the spring, so as to cut off the flow.
High temperature resistance
Perfect for Heating. cooling or air conditioning, the shutter is able to withstand temperatures up to 140°F, corrosion resistant, strong and durable.
It can be safely used in range hoods, bathroom fans, kitchen and other home HVAC applications. Essential for HVAC ventilation.
High-Quality Materials
The backdraft damper and the flap leaves is made of a Galvanized steel, the axis are made of aluminum, while the spring are made of carbon steel.
One-way Airflow Ducting Insert
Back-flow valve with 1 spring-loaded wings prevents the reverse airflow movement through the ventilation duct when the ventilation system is turned off.
Perfect details
It can be opened easily when air flow is obtained and spring-loaded to close when your fan is turned off.
