Nominal: 16 1/2 x 21 5/8 x 1, Size: 16 1/2"x21 5/8"x3/4" 16 1/2x21 5/8x1, AC Furnace Air Filter | Comparable to MPR 600 Clean Living | Comparable to Honeywell Micro Defense Plus FPR 5 | Designed to filter microscopic particles such as lint, dust mites, spores, pollen, pet dander, and dust. | Change frequency 60-90 days, Made in the USA.
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Item# : SPM18474901004
Model # : RNAB07F1VM3SR