Actual dimensions are 12.38 x 19.88 x 4.38. Accumulair brand: 12.5x20x5 Honeywell FC100A1052 substitute whole house filters, exactly engineered to substitute for the name brand Honeywell FC100A1052 filters. Completely constructed - no assembly or combs required. MERV classified to ASHRAE 52.2 test classifications establishing performance as good or better than the original brand Honeywell FC100A1052 filters. Notice: Example air filter pic shown is not to scale and is displayed for style only. Name brands and Honeywell FC100A1052 identifier are shown for filter style identification purposes only.
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