8" Hvac Duct Manual Volume Damper, PP Adjustment Flame Retardant Airflow Backdraft Damper Control Valve For Hvac Air Balancing System, Beige

The manual volume damper is used for air volume regulation in an air ventilation system, widely used in HVAC industry. With that installed in your HVAC systems, you can easily control the air flow rate or close off an air duct if needed, to some extent, it will increase the energy efficiency of your system.SpecificationColor: BeigeMaterial: PPInner Diameter of Interface: 200 mm / 8 InchOverall Size: 185 x 4 mm / 7.28 x 0.16 inch (L*T)Packing List: 1 x Duct Manual Volume DamperAdvantage1. Our damper sleeve features a rubber seal ring inside, providing good air tightness and it can prevent the air duct valve from leaking when it is closed. Also, this innovative design ensures smooth and silent operation when the flap board opens or closes.2. The side is designed with a rotary handle, which can adjust the air volume from multiple angles and is easy to operate;3. With a smooth and flat interior design, can ventilate rapidly.InstructionEasy to install, just simply slide the volume damper into the pipe you are attaching to, and fix with pipe clamp and tape.NOTE: Please confirm the inner diameter of the air volume damper before placing an order and the recommended temperature range is -10 - 70 centigrade.