12x20x1 Merv 8 Pleated AC Furnace Air Filters. Box of 6 ACTUAL SIZE: 11-1/2 x 19-1/2 x 3/4 | Filter Rating: MERV 8 | FPR 5 | MPR 600 12x20x1 AC Furnace Air Filters MERV 8. Box of 6 Protects from Lint, Dust, Pet Dander, Pollen, Dust Mites, & Mold Pleat consistency maximizes performance Made in the USA