Aerostar 21 1/2x23 3/8x1 MERV 11; Pleated Air Filter; 21 1/2 x 23 3/8 x 1; Box of 6; Made in the USA
$19.69
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Aerostar 21 1/2x23 3/8x1 MERV 11; Pleated Air Filter; 21 1/2 x 23 3/8 x 1; Box of 6; Made in the USA
Aerostar 21 1/2x23 3/8x1 MERV 11; Pleated Air Filter; 21 1/2 x 23 3/8 x 1; Box of 6; Made in the USA
$19.69
Nominal: 21 1/2 x 23 3/8 x 1; Size: 21 1/2"x23 3/8"x3/4" 21 1/2x23 3/8x1; 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.