Product Information
- 【Material】Hon&Guan 4 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-2PCS.
- 【Installation method】The position of the 4 duct damper spring should be horizontal for horizontal installations so that it can open and close optimally.
- 【Wide applications】Back draught valves can be inserted into ventilation ducts which are flexible or non-flexible. Designed for use with range hoods, bathroom fans, kitchen and other home HVAC applications.
- 【Lightweight valve wings】The valve 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.
- 【Backdraft Shutter】Hon&Guan vent damper designed to improve ventilation by preventing air from re-circulating when the fans are not in use, rubber ring ensure 100% closure and quiet closing.
