Nominal: 21-1/2 x 23-5/16 x 1, Size: 21-1/2"x23-5/16"x3/4" 21 1/2x23 5/16x1, AC Furnace Air Filter
Comparable to MPR 1000 to 1200 Micro Allergen Defense and Honeywell Allergen Plus FPR 7
Designed to filter microscopic particles such as lint, dust mites, spores, pollen, pet dander, dust, and smoke.
Simple to install and a cost-effective step towards a healthier home environment. For best results, change your filters every 60 to 90 days but increase frequency to 30 days during peak summer and winter months
100% synthetic electrostatic media for high efficiency with low air flow resistance
