PATIKIL Backdraft Damper, 6 Inch, 2 Pack Ducting Hose Airflow Insert Backflow Preventer Shutter, One-Way Draft Stopper for Kitchen Bathroom Exhaust Vent Fans

Durable Material: The body is made from galvanized iron and the flap blade is made from aluminum, durable material for long-lasting performance. Constructed with sturdy components to ensure reliability. Size: Port Outer Diameter: 149mm / 6 inch; Length:88mm / 3.5 inch Automatically Open and Close: Enjoy a comfortable environment with our Backdraft Damper, designed to automatically open and close to keep unwanted air out. Say good-bye to drafts and temperature fluctuations as this damper effectively blocks cold or warm air from entering your space. EPDM Rubber Seal Ring Inside: Experience noiseless and quiet with our Backdraft Damper featuring an EPDM rubber seal ring. This innovative design ensures smooth and silent operation when the flap board opens or closes. No more annoying noise as the rubber seal ring effectively reduces any loud sounds during operation. Also, the rubber ring can provide extra air tightness. Easy to install: Simply push it directly into your ventilation pipe for a secure fit. Save time and effort with our design that allows for quick and straightforward installation. Applications: Suitable for residential and commercial applications, our Backdraft Damper is perfect for use in HVAC systems, exhaust fans, and ventilation ducts. Whether it's in your home, office, or industrial setting, this damper is a versatile solution to maintain optimal air quality and temperature control.