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Item Model Number: AAS-12x24x4
Brand: AAS American Filters Filter size: 12x24x4 Actual Size: 11.75 x 23.75 x 3.75 4-Inch Filter MERV 8 Standard Efficiency Air Filter (similar performance to MPR 600 & FPR 5): Provides basic defense against dust pollen and other airborne particles capturing up to 90% without affecting air flow. Residential / Commercial Use Made in the USA Ships in 48 hours