Actual dimensions are 20.1 x 25.7 x 5. Accumulair brand, 21x26x5 American Standard TFM260B0AH0A replacement whole house filters, specifically designed to replace name brand American Standard TFM260B0AH0A air filters. Fully assembled so no forming or combs needed. MERV graded to ASHRAE 52.2 test specifications establishing performance equal to the original manufacturer American Standard TFM260B0AH0A air filter. Notice: Sample filter picture as shown is not to scale and is included to show style only. Company names and American Standard TFM260B0AH0A P/N are shown for air filter style identification purposes only.
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