Description
Actual Size: 20 x 21.13 x .75. Accumulair brand: 21x21.5x1 American Standard BAYFTFR21W1A replacement whole house air filters, exactly built to substitute for the original manufacturer American Standard BAYFTFR21W1A filters. Fully box-formed with no forming or combs required. MERV classified to ASHRAE specs establishing performance equal to the original brand American Standard BAYFTFR21W1A filter. Photo: The example filter pic shown is not the actual dimensions and is included to show construction purposes only. Brand names and American Standard BAYFTFR21W1A P/N are used for air filter replacement identification purposes.