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17-1/2 x 21 x 1 Exact Air Filter Glasfloss GDS Series Disposable – Box of 12

Actual Size: 17-1/2 x 21 x 1


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Glasfloss GDS 17-1/2 x 21 x 1 disposable, double-strut furnace filters are excellent for protecting your HVAC (Heating, Ventilation & Air Conditioning) and removing dust, dust mites, pollen and other pollutants from your indoor air. These air filters also offer a double-strut design that provides durability and a 10% greater open surface area than traditional fiberglass filters. The air filter frame is constructed of heavy-duty craftboard that the fiberglass media is bonded to.

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