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Item Model Number: AAS-21x24x4.5
Brand: AAS American Filters Filter size: 21x24x4.5 Actual Size: 20.75 x 24.25 x 4.38 Whole House Filter MERV 11 Enhanced Efficiency Air Filter (similar performance to MPR 1000/1200 and FPR 7): Delivers improved defense against dust, pollen, pet dander, mold, smog, and other contaminants, capturing up to 95% of airborne particles without impacting air flow. Residential / Commercial Use Made in the USA Ships in 48 hours
