Filtrete 12x24x1 Air Filter, MPR 1900 MERV 13, Ultimate Allergen Reduction, 4 Filters Add $87.88current price $87.88Filtrete 12x24x1 Air Filter, MPR 1900 MERV 13, Ultimate Allergen Reduction, 4 Filters Save with Filtrete 14x20x1 Air Filter, MPR 1500 MERV 12, Allergen, Ba...