Actual dimensions are 20 x 23.13 x .75. Accumulair brand 21x23.5x1 Trane BAYFTAH23W1A substitute whole house filters, exactly designed to replace the original brand Trane BAYFTAH23W1A air filters. Fully box-formed with no assembly or combs required. MERV rated to ASHRAE 52.2 test classifications establishing particulate capture to the level of the OEM Trane BAYFTAH23W1A filter. Notice: The example air filter pic as displayed is not true to size and is shown for design only. Name brands and Trane BAYFTAH23W1A P/N are included for air filter replacement purposes only.
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