Hon&Guan 6 Inch Backdraft Damper with 6 Inch Inline Booster Duct Fan with Speed Controller-345CFM

Upgrade design The 6 inch damper on both sides of the top and bottom of the two new concave inward pressure rib, and increase the thickness to 0.6mm,to ensure that the product is more solid, not easy to damage., Quality Material The 6 inch backdraft damper is made of a galvanized steel to withstand temperatures up to 140°F, the axis are made of aluminum, while the spring are made of carbon steel. Rugged and corrosion-resistant to keep you venting smoothly, Wide Applications The 6 inch duct draft blocker valves can be inserted into ventilation dryer vent hose. Designed for use with range hoods, bathroom fans, kitchen and other home HVAC applications, Energy-Efficient Ventilation This powerful inline duct fan speed of 3300 RPM can create the air flow of 345 CFM, Maximum power consumption is only 19.2W. Upgrade DC motor & low noise effectively circulating air, quickly move vast amount of air to exhaust odors., Adjustable Controller The 6-inch duct fan includes a variable speed controller, which can allows you to adjust the airflow and noise at will.