12x20x1 Economy Air Filter GDS Series by Glasfloss - Box of 6 2. Height_24 17-1/2" x 23-1/2" x 7/8"

17-1/2" x 23-1/2" x 7/8" (17

and other pesky pollutants

FEM4X4200A

11-5/8" x 19-5/8" x 3/4"

12x20x1 Economy Air Filter GDS Series by Glasfloss - Box of 6 2. Height_24 17-1/2" x 23-1/2" x 7/8"Protect your HVAC system with Glasfloss GDS 12x20x1 disposable furnace filters! They're your go to solution for cleaner indoor air, reducing dust, pollen, and other pesky pollutants. These filters are built tough with a double strut design for durability and boast a 10% larger surface area than regular fiberglass filters. Crafted with a sturdy craftboard frame and bonded fiberglass media, these filters offer reliable protection for your HVAC