Nominal Size: 19-7/8 x 21-1/2 x 1, Actual Size: 19-7/8" x 21-1/2" x 3/4", 19 7/8x21 1/2x1, AC and Furnace Air Filter

Comparable to 3M Filtrete MPR 1500 to 1900 Ultimate Allergen Defense

Comparable to Honeywell Allergen Elite FPR 10

Fights lint, dust mites, mold spores, pollen, pet dander, fine dust, smoke, viruses, and bacteria.

Box Set of 6

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