Actual size is 20.1 x 21.1 x 5. Accumulair brand, 21x21.5x5 American Standard TFM215B0AH0A substitute whole house filters, exactly designed to replace original manufacturer American Standard TFM215B0AH0A filters. Fully constructed so no assembly or combs required. MERV rated to ASHRAE 52.2 test ratings ensuring particulate filtration equal to the name brand American Standard TFM215B0AH0A filters. Notice: The example filter pic as shown is not true to size and is displayed for construction purposes only. OEM names and American Standard TFM215B0AH0A P/N shown for air filter substitution identification.
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