Actual Dimensions: 19.75 x 19.88 x 4.38. Accumulair brand 20x20x5 Honeywell F55A1426 style whole house filters, specifically built to be an alternative to the original manufacturer Honeywell F55A1426 filters. Fully box-formed with no forming or combs required. MERV graded to ASHRAE classifications assuring particulate filtration as good or better than the OEM Honeywell F55A1426 filters. Photo: Example air filter pic as displayed is not to scale and is included to show design purposes. Trade names and Honeywell F55A1426 part numbers are listed for air filter substitution identification purposes.
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