Upgraded 4 Inch Duct Damper Backdraft Damper One Way Airflow Backflow Preventer For Dryer Vent Hose 2 Pack With Thick 0.6mm Flaps For Strong Seal Easy Install And Quiet Operation
✔️ 2-pack, 4 inch dampers with 0.6mm thick flaps for strong seal
This upgraded backdraft damper fits standard 4 inch ducts and is built to prevent backflow in dryer vents, range hoods, bathrooms, and kitchen exhausts. It combines solid galvanized steel flaps with a lightweight aluminum axis for durable, quiet operation.
✅ 4 inch (102 mm) damper diameter for standard ducts
✅ Galvanized steel flap leaves with 0.6 mm thickness for strong seal
✅ Aluminum axis and carbon steel springs for reliable action
✅ Includes 2 dampers in a pack for convenient setup
✅ Rubber seal around the perimeter ensures quiet closing
💡 What is a backdraft damper used for in duct ventilation systems? A handy device to control airflow and seal off reverse flow in vents. - Helps prevent reverse air flow in dryer vents, range hoods, and bathroom fans. - Improves energy efficiency by keeping conditioned air in place. - Durable design with galvanized steel flaps, 0.6 mm thick, aluminum axis and carbon steel springs.