Actual Size: 20.1 x 25.7 x 5. Accumulair brand, 21x26x5 American Standard TFM260B0AH01 style whole house filters, exactly designed to substitute for the original brand American Standard TFM260B0AH01 filters. Fully constructed so no assembly or combs needed. MERV classified to ASHRAE ratings ensuring particulate filtration as good or better than the original manufacturer American Standard TFM260B0AH01 filter. Notice: The sample filter image as displayed is not true to size and is included to show configuration purposes only. Name brands and American Standard TFM260B0AH01 identifier are shown for air filter substitution identification use.
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