Description
Actual Size: 20.1 x 21.1 x 5. Accumulair brand 21x21.5x5 American Standard BAYFTAH21M compatible whole house air filters, exactly constructed to substitute for the OEM American Standard BAYFTAH21M filters. Completely built with no forming or combs needed. MERV rated to ASHRAE 52.2 test specs assuring operation to the level of the original brand American Standard BAYFTAH21M air filter. Photo: Example filter picture as shown is not the actual dimensions and is shown for construction purposes. Brand names and American Standard BAYFTAH21M part numbers are used for air filter replacement identification use.