Actual size is 19.88 x 24.88 x 4.38. Accumulair brand: 20x25x5 Honeywell F100F1038 substitute whole house air filters, specifically designed to be an alternative to the name brand Honeywell F100F1038 filters. Completely constructed so no assembly or combs needed. MERV graded to ASHRAE 52.2 test standards ensuring operation to the level of the original manufacturer Honeywell F100F1038 filters. Notice: Example air filter pic shown is not to scale and is there to show configuration purposes. Name brands and Honeywell F100F1038 P/N are included for filter replacement identification only.
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