16x20x2 AC and Furnace Air Filter by Aerostar - MERV 11, Box of 6

Nominal Size: 16x20x2, Actual Size: 15 1/2" x 19 1/2" x 1 3/4" 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.