These back draft dampers are manufactured with galvanized steel and can be mounted directly in the ventilation duct to ease the installation. The two blades are opened by a spiral spring to prevent any malfunction. Furthermore, the dampers come with a gasket to insure a quiet and sealed operation.
$35.95 Original price was: $35.95.$25.17Current price is: $25.17.
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| Duct Size | 4 in |
|---|---|
| Height | 4 in |
| Weight | 0.4 lbs |
| Length | 2-15/16 in |
| Width | 4 in |
| Material | Galvanized Steel |
| Manufacturers Part Number | bdd4 |
| Brand | Vortex Powerfan |
| Warranty | 1 yr |
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