Actual Size: 19.88 x 24.88 x 4.38. Brand: Accumulair. 20x25x5 Honeywell F50E1166 style whole house air filters, specifically built to substitute for the OEM Honeywell F50E1166 filters. Completely box-formed with no forming or combs needed. MERV graded to ASHRAE specifications assuring particulate capture equal to the original manufacturer Honeywell F50E1166 filter. Photo: Sample air filter pic as displayed is not true to size and is displayed for construction only. OEM names and Honeywell F50E1166 part numbers are listed for filter style identification only.
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