Description
Actual Dimensions: 19.75 x 20.75 x 4.88. Accumulair brand: 20x20x5 Ultravation 91-028 compatible whole house air filters, exactly designed to substitute for the OEM Ultravation 91-028 air filters. Completely assembled - no assembly or combs needed. MERV graded to ASHRAE grades assuring particulate filtration equal to the OEM Ultravation 91-028 filters. Photo: The example air filter picture shown is not true to size and is shown for style purposes. Trade names and Ultravation 91-028 P/N shown for filter substitution identification purposes.