20x25x4 Aerostar Filter MERV 11, Air Filter, 20 x 25 x 4, Box of 4

Nominal: 20 x 25 x 4 Size: 19 1/2"x24 1/2"x3 3/4" 20x25x4, AC Furnace Air Filter Replaces Honeywell Part Numbers: F25, 203720, F35, F35R, FC35A1027, F100, F150, FC100A1037, F200, FC200E1037, FC100C1017, F50A1066, F50E1141, F50E1166, F50E6066, F50E8005, F50E8047, F50F1081, F55A1384, F55A1400, F55A1434, F55F1003, F55F1037 Comparable to 3M Filtrete MPR 1000 to 1200 Micro Allergen Defense Comparable to Honeywell Allergen Plus FPR 7 Fights lint, dust, dust mites, mold spores, pollen, pet dander, and smoke.