Double Strut design for performance and durability.
10% greater open area compared to other furnace filters.
Easy to install and remove. No metal parts or sharp edges.
Provides good equipment protection.
Glasfloss GDS 20x20x1 disposable, double-strut furnace filters are excellent for protecting your heating and cooling system and indoor air. These air filters 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 craft board that the fiberglass media is bonded to.
We do not accept returns or cancel for change of mind. We only offer returns for items that are faulty or damaged.
