3" Hvac Duct Manual Volume Damper Stainless Steel Adjustment Airflow Control

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: Silver ToneMaterial: 201 Stainless SteelInner Diameter of Interface: 79 mm / 3.11 inchMax Outer Diameter: 80 mm / 3.15 inchHandle Length: 150 mm / 5.91 inchOverall Size: 150 x 0.6 mm / 5.91 x 0.02 inch (L*T)Packing List: 1 x Duct Manual Volume DamperAdvantage1. Made of thick 201 stainless steel, which has good hardness, durable, not easy to deform and corrosion, moisture proof and rust resistant, and can be used for a long time.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, it can ventilate rapidly.InstructionEasy to install, just simply slide the volume damper into the pipe you are attaching to, and fix it with pipe clamp and tape. (pipe clamp and tape are not included here)NOTE: Please confirm the inner diameter of the air volume damper before placing an order and the recommended temperature range is -10 - 70 centigrade.