Description
Actual Dimensions: 19.75 x 20.75 x 4.88. Accumulair brand, 20x20x5 Ultravation 91-013 replacement whole house air filters, specifically built to replace name brand Ultravation 91-013 filters. Completely box-formed with no forming or combs required. MERV classified to ASHRAE 52.2 test grades establishing function as good or better than the OEM Ultravation 91-013 filter. Notice: The example air filter picture shown is not the actual dimensions and is there to show construction only. OEM names and Ultravation 91-013 P/N are used for filter substitution identification use.