Aerostar 14x14x1 MERV 11 Pleated Air Filter, Made in the USA, 6-Pack Nominal: 14 x 14 x 1, Size: 13 3/4"x13 3/4"x3/4" 14x14x1, AC Furnace Air Filter Comparable to 3M Filtrate 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