Aerostar 20x20x1 Air Filters MERV 11; Pleated Air Filter; 20x20x1; Box of 4; Made

Nominal: 20 x 20 x 1; Size: 19 3/4"x19 3/4"x3/4" 20x20x1; AC Furnace Air Filter Comparable to 3M Filtrete MPR 1000 to 1200 Micro Allergen Defense Comparable to Honeywell Allergen Plus FPR 7 Fights lint; dust mites; mold spores; pollen; pet dander; dust; and smoke. Change frequency 60-90 days; Made .