Description
Actual Size: 19.75 x 20.75 x 4.88. Accumulair brand 20x20x5 Ultravation 91-028 style whole house filters, specifically built to be an alternative to the name brand Ultravation 91-028 filters. Completely constructed so no forming or combs required. MERV graded to ASHRAE 52.2 test ratings ensuring particle filtration equal to the OEM Ultravation 91-028 air filters. Photo: The sample air filter pic as displayed is not to scale and is included to show style purposes. Name brands and Ultravation 91-028 identifier are used for filter substitution identification.