Advertised (Nominal) Size: 16 x 20 x 1, Size: 15 3/4"x23 3/4"x3/4" 16x20x1, AC Furnace Air Filter, (Pack of 6 Filters), MERV 8, comparable with MPR 600 Comparable to 3M Filtrete MPR 600 Clean Living, and Honeywell Micro Defense Plus FPR 5 BREATHE CLEANER: Fights lint, dust, pollen, dust mites, and mold spores: Creating a fresh and healthy home.