18x18x1 Economy Air Filter GDS Series by Glasfloss - Box of 6Protect your HVAC system with Glasfloss GDS 18x18x1 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

Protect your HVAC system with Glasfloss GDS 16x20x1 disposable furnace filters

healthier air for your home or office

19-1/2" x 24-1/2" x 1-3/4" (19

15-5/8" x 24-5/8" x 3/4"

moisture resistant beverage board to create a rigid filter frame that is easy to install and remove

20" x 30" x 1"

14-1/2" x 19-1/2" x 7/8" (14

15-5/8" x 15-5/8" x 3/4"

Pleats Per Foot:

13-5/8" x 19-5/8" x 3/4"

20" x 20" x 2"

HWP20204M11