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4" Backdraft Damper
Sale price
$2.99
Unit price
Shipping
calculated at checkout.
DL WHOLESALE | SKU:
660310
4" Backdraft Damper is backordered and will ship as soon as it is back in stock.
Delivery and Shipping
Delivery and Shipping
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4" Backdraft Damper
Sale price
$2.99
Unit price
4" Backdraft Damper is backordered and will ship as soon as it is back in stock.
Description
Description
The 4" backdraft damper prevents reverse airflow when fans are shut off.
- Galvanized steel construction
- Prevents reverse airflow when fans are off
- Saves CO2 and blocks odor backflow
- Pre-installed rubber gasket for an airtight exterior seal
- Fits standard 4" ducting
