Hon&Guan 4'' Backdraft Damper, One-Way Airflow Ducting Insert Backflow Preventer Duct Draft Blocker, HVAC Inline Fan Vent Deflector.

By Brand : Hon&Guan

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Product Details :

Manufacturer : Hon&Guan
Package Dimensions : 11.2 x 11.1 x 10.49 cm; 141 Grams
ASIN : B09WDFDHNB

Product Features :

MaterialThe 4 inch 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.
Installation methodThe position of the spring should be horizontal for horizontal installations so that it can open and close optimally
Wide applicationsBack 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 wingsThe 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 ShutterHon&Guan Draft Blocker 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.

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