Actual Size: 20.63 x 26.25 x .75. Accumulair brand, 21x27x1 American Standard TFP210A0FR10 replacement whole house filters, exactly designed to replace the original manufacturer American Standard TFP210A0FR10 air filters. Completely assembled so no assembly or combs required. MERV graded to ASHRAE 52.2 test grades ensuring particulate filtration to the level of the name brand American Standard TFP210A0FR10 filters. Photo: The sample filter image displayed is not the actual dimensions and is shown for configuration purposes only. OEM names and American Standard TFP210A0FR10 identifier used for filter substitution identification purposes.