10x20x1 Merv 8 Pleated AC Furnace Air Filters. Box of 6 10x20x1 AC Furnace Air Filters MERV 8 ( MPR 600 ). Box of 6 Protects from Lint, Dust, Pet Dander, Pollen, Dust Mites, & Mold Actual Size: 9-1/2 x 19-1/2 x 3/4. Filter Rating: MERV 8 | FPR 5 | MPR 600. Pleat consistency maximizes performance Made in the USA