Quick view Compare Add to Cart 20x25x1 MERV 10 HVAC Air Filters. 12 Pack $65.00 20 x 25 x 1 MERV 10 AC & Furnace Air Filters. Actual Size: 19 ½ x 24 ½ x 7/8. Filtration Rating: MERV 10, MPR 600-700, FPR 5-6. Protects: Lint, Dust, Pet Dander, Pollen, Dust Mites, Smog, & Mold...