Our return air dampers are suitable for residential and commercial applications and are fit for use in HVAC systems, exhaust fans and ventilation ducts. Whether in your home, office or industrial environment, this damper is a versatile solution for maintaining optimal air quality and temperature control.SpecificationMaterial: PVCColor: WhiteInner Diameter of Interface: 100 mm / 3.9 InchOuter Diameter of Interface: 103 mm / 4.1 InchLength: 103 mm / 4.1 InchPacking List: 2 pcs Backdraft DamperAdvantageDurable plastic material, durable performance and waterproof, to ensure reliability, can be used for a long time. Smooth interface and easy disassembly. With gravity shutter flap, effectively prevent the backdraft air flow, it is suitable for use together with solid plastic ducts or flexible ducts.
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