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Backdraft Damper 6in

https://www.dlw.co/web/image/product.template/17808/image_1920?unique=d9f876c
Made of galvanized steel. Prevents reverse air flow when fans are shut off. Saves CO2 and prevents odors from flowing backwards. Rubber gasket pre-installed on exterior for an air tight seal.

14.50 14.5 USD 14.50

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