PATIKIL 4 Inch Backdraft Damper Control Valve, 2 Pcs Duct Manual Volume Adjustment Airflow Ducting for Fan Airflow, Dryer Vent, Range Hood, White

• Specification: Color: White; Material: PVC; Outer Diameter of Interface: 96 mm / 3.94 inch; Inner Diameter of Interface: 92 mm / 3.62 inch; Packing List: 2 pcs Duct Manual Volume Damper
• Advantage: Made of durable PVC material, environmental protection, easy to process, not easy to deformation and corrosion, moisture resistance and fading, can be used for a long time. The side design has a rotating handle, can adjust the air volume from multiple angles, easy to operate. Smooth interface, easy disassembly. Manual operation of the adjustable valve allows easy and efficient adjustment of air volume according to specific needs.
• Instruction: Easy to install, just simply slide the volume damper into the pipe you are attaching to, and fix with pipe clamp and tape.
• Application: The manual volume damper is used for air volume regulation in an air ventilation system, widely used in industry. It can be used in exhaust fan ducts, dryer exhaust ports, fan airflow, vents and other residential and industrial applications, 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.
• Notice: Please confirm the outer diameter of the volume damper before placing an order.

The manual volume damper is used for air volume regulation in an air ventilation system, widely used in industry. It can be used in exhaust fan ducts, dryer exhaust ports, fan airflow, vents and other residential and industrial applications, 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. Specification Color: White Material: PVC Outer Diameter of Interface: 96 mm / 3.94 inch Inner Diameter of Interface: 92 mm / 3.62 inch Packing List: 2 pcs Duct Manual Volume Damper Advantage Made of durable PVC material, environmental protection, easy to process, not easy to deformation and corrosion, moisture resistance and fading, can be used for a long time. The side design has a rotating handle, can adjust the air volume from multiple angles, easy to operate. Smooth interface, easy disassembly. Manual operation of the adjustable valve allows easy and efficient adjustment of air volume according to specific needs. Instruction Easy to install, just simply slide the volume damper into the pipe you are attaching to, and fix with pipe clamp and tape. Notice: Please confirm the outer diameter of the volume damper before placing an order.