Actual dimensions are 19.88 x 24.88 x 4.38. Accumulair brand, 20x25x5 Honeywell F55F1003 style whole house air filters, exactly designed to replace OEM Honeywell F55F1003 air filters. Fully box-formed - no forming or combs required. MERV graded to ASHRAE 52.2 test specifications establishing particle filtration as good or better than the original brand Honeywell F55F1003 filter. Note: Example air filter image as displayed is not the actual dimensions and is included to show style only. Name brands and Honeywell F55F1003 P/N used for filter style identification only. Catalog and variations last verified on 03/29/2020.
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