Actual size is 19.75 x 19.88 x 4.38. Accumulair brand 20x20x5 Honeywell F55A1459 style whole house filters, exactly built to replace OEM Honeywell F55A1459 filters. Fully built - no forming or combs required. MERV classified to ASHRAE specifications assuring operation as good or better than the name brand Honeywell F55A1459 air filter. Note: The sample air filter pic as displayed is not to scale and is included to show style purposes only. Trade names and Honeywell F55A1459 P/N shown for filter replacement identification only.
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