Description
Actual dimensions are 20 x 23.13 x .75. Accumulair brand: 21x23.5x1 American Standard TFE235A9AH20 style whole house filters, exactly built to substitute for the OEM American Standard TFE235A9AH20 filters. Completely constructed - no forming or combs needed. MERV classified to ASHRAE 52.2 test specifications ensuring filtration as good or better than the name brand American Standard TFE235A9AH20 air filters. Notice: Sample filter image shown is not the actual dimensions and is shown for configuration only. OEM names and American Standard TFE235A9AH20 identifier are used for air filter replacement identification only.