Actual size is 20.63 x 26.25 x .75. Accumulair brand, 21x27x1 American Standard TFE210A9FR20 compatible whole house filters, exactly constructed to replace the original brand American Standard TFE210A9FR20 air filters. Fully constructed - no forming or combs required. MERV graded to ASHRAE 52.2 test specs establishing particle filtration equal to the name brand American Standard TFE210A9FR20 air filter. Note: The sample filter image as displayed is not true to size and is there to show construction purposes. Trade names and American Standard TFE210A9FR20 part numbers included for filter style identification use.
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