Aerostar 8x24x1 MERV 11, Air Filter, 8x24x1, Box of 4

Nominal: 8 x 24 x 1, Size: 8"x24"x1" 8x24x1, 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 in the USA.