Actual size is 20 x 23.13 x .75. Accumulair brand 21x23.5x1 American Standard TFE235A9AH00 substitute whole house air filters, specifically engineered to substitute for the name brand American Standard TFE235A9AH00 air filters. Completely assembled with no assembly or combs required. MERV rated to ASHRAE 52.2 test ratings establishing particulate filtration as good or better than the original manufacturer American Standard TFE235A9AH00 air filters. Photo: Sample air filter image displayed is not to scale and is displayed for construction only. Name brands and American Standard TFE235A9AH00 P/N are listed for filter replacement identification purposes.
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