20x20x1 MERV 8 Pleated AC Furnace Air Filters. 6 PACK 6 PACK of 20x20x1 AC Furnace Air Filter MERV 8 | Actual Size:19-1/2 x 19-1/2 x 3/4 Protects from Lint, Dust, Pet Dander, Pollen, Dust Mites, & Mold Heavy duty, moisture resistant beverage board frame Pleat consistency maximizes performance Made in the USA