Nominal: 12 x 24 x 1, Size: 11 3/4"x23 3/4"x3/4" 12x24x1, AC Furnace Air Filter Comparable to 3M Filtrete MPR 600 Clean Living Comparable to Honeywell Micro Defense Plus FPR 5 Fights lint, dust mites, mold spores, pollen, pet dander, and dust. Change frequency 60-90 days, Made .
