18x30x1 Air Filter Glasfloss GDS Series Disposable - Case of 6

Glasfloss GDS 18x30x1 disposable, double-strut furnace filters are excellent for protecting your heating and cooling system and removing dust, 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.