Actual Dimensions: 19.88 x 24.88 x 4.38. Accumulair brand 20x25x5 Honeywell F50A1009 compatible whole house filters, specifically built to replace original manufacturer Honeywell F50A1009 air filters. Completely assembled so no forming or combs needed. MERV graded to ASHRAE ratings ensuring particle filtration as good or better than the original manufacturer Honeywell F50A1009 filters. Notice: The sample filter picture shown is not true to size and is shown for configuration purposes only. OEM names and Honeywell F50A1009 part numbers included for filter substitution identification purposes.
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