Description
Actual size is 19.75 x 20.75 x 4.88. Accumulair brand, 20x20x5 Ultravation 91-013 substitute whole house air filters, specifically designed to substitute for the original brand Ultravation 91-013 air filters. Fully built so no forming or combs required. MERV graded to ASHRAE 52.2 test ratings establishing function to the level of the original manufacturer Ultravation 91-013 air filter. Photo: The sample filter picture shown is not true to size and is there to show configuration purposes. Trade names and Ultravation 91-013 P/N used for air filter style identification.