Description
Actual Dimensions: 20.1 x 21.1 x 5. Accumulair brand 21x21.5x5 Honeywell TRN2121T1 compatible whole house air filters, exactly built to replace the original brand Honeywell TRN2121T1 air filters. Completely assembled with no assembly or combs required. MERV classified to ASHRAE 52.2 test grades establishing function to the level of the name brand Honeywell TRN2121T1 filter. Notice: The example filter pic as shown is not to scale and is displayed for configuration purposes. Company names and Honeywell TRN2121T1 P/N are included for air filter substitution identification.