[Upgraded] Hon&Guan Duct Damper 6 inch, Backdraft Damper One-Way Airflow Vent Damper Backflow Preventer for 6 Inch Duct Dryer Vent Hose-2pcs

Features

• 【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, and 2 springs instead of 1 spring in the market, ensuring that the product is more robust and less prone 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
• 【Installation method】The vent damper 6 inch has an opening of 150 mm and a length of 88 mm. When installed horizontally, the spring should be positioned horizontally so that it can be opened and closed optimally.
• 【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
• 【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. Rubber ring ensure 100% closure and quiet closing.