Actual size is 20.75 x 20.25 x 5.25. Accumulair brand 20x20x5 Electro-Air MU2020 style whole house air filters, exactly constructed to be an alternative to the OEM Electro-Air MU2020 air filters. Fully built with no assembly or combs required. MERV classified to ASHRAE specifications ensuring filtration to the level of the name brand Electro-Air MU2020 filters. Notice: The example air filter picture shown is not the actual dimensions and is shown for configuration purposes. OEM names and Electro-Air MU2020 P/N are included for filter substitution identification.
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