Aerostar 18x24x2 MERV 11; Pleated Air Filter; 18x24x2; Box of 6; Made in the USA
$27.61
Size: 17 3/8"x23 3/8"x1 3/4"; Nominal: 18 x 24 x 2 18x24x2; 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.