2 Pack 4 Inch Backdraft Damper Duct, One-Way Airflow Duct Draft Stopper, Inse...
USD 26.45 USD
Practical Function: The airflow regulating backdraft shutter opens only in the outgoing air direction, prevents cold air or wind from entering the ventilation duct. Fit for 4 in duct openings. The position of the spring should be horizontal so that it can be opened and closed optimally.
Specifications
| Color | Silver |
| Included Components | 2 X Airflow Duct Damper |
| Brand | SOUJOY |
| Material | Galvanized Steel |
| Package Dimensions LxWxH | 7.91x4.57x3.66 Inches |
| Weight | 0.53 Pounds |
| Country Of Origin | China |
Practical Function: The airflow regulating backdraft shutter opens only in the outgoing air direction, prevents cold air or wind from entering the ventilation duct. Fit for 4 in duct openings. The position of the spring should be horizontal so that it can be opened and closed optimally.
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