![[Upgraded]4” Backdraft Damper One-Way Airflow Vent Duct Draft Blocker Galvanized](/image/GUgAAeSw46Foi2~P/upgraded-4-backdraft-damper-one-way-airflow-vent-duct-draft-blocker-galvanized.jpg)
| Size Name | 4 Inch |
|---|---|
| Batteries Required? | No |
| Color | Sliver |
| Material | Galvanized Steel |
| Item Weight | 5.3 ounces |
| Batteries Included? | No |
| Size | 4 Inch |
| Package Dimensions | 4.45 x 4.41 x 4.09 inches |
| UPC | 313047742773 |
Check the listing for details. [Upgraded]4” Backdraft Damper One-Way Airflow Vent Duct Draft Blocker Galvanized. Color: Sliver, Condition: New. Listed at 18.99 USD. Wings automatically open under airflow pressure andclose silently when air reverses, preventing drafts and backflow. Perfect for maintaining clean and fresh air. • 1 x 4” Galvanized Steel Backdraft Damper with Spring.
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