Actual dimensions are 19.75 x 19.88 x 4.38. Accumulair brand 20x20x5 Honeywell F55A1244 replacement whole house filters, exactly designed to replace the OEM Honeywell F55A1244 filters. Fully built with no forming or combs required. MERV classified to ASHRAE ratings establishing particulate filtration equal to the original manufacturer Honeywell F55A1244 air filter. Photo: The sample air filter picture shown is not true to size and is shown for design purposes. Company names and Honeywell F55A1244 identifier shown for air filter replacement purposes.
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