Actual dimensions are 20 x 23.13 x .75. Accumulair brand 21x23.5x1 American Standard TFE235A1AH20 replacement whole house filters, exactly engineered to substitute for the name brand American Standard TFE235A1AH20 air filters. Fully assembled with no forming or combs required. MERV graded to ASHRAE ratings assuring performance to the level of the original brand American Standard TFE235A1AH20 air filters. Photo: The example air filter pic shown is not true to size and is there to show style only. OEM names and American Standard TFE235A1AH20 identifier displayed for air filter substitution identification purposes.
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