Actual Dimensions: 19.75 x 19.88 x 4.38. Accumulair brand 20x20x5 Honeywell F58F1026 compatible whole house filters, specifically built to substitute for the original manufacturer Honeywell F58F1026 filters. Fully box-formed with no assembly or combs required. MERV graded to ASHRAE 52.2 test ratings ensuring particulate filtration equal to the original manufacturer Honeywell F58F1026 filters. Note: The example air filter image as displayed is not true to size and is displayed for configuration only. Brand names and Honeywell F58F1026 part numbers shown for filter style identification use.
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