Description
Actual size is 12.38 x 19.88 x 4.38. Accumulair brand, 12.5x20x5 Honeywell F100F compatible whole house filters, specifically engineered to replace original brand Honeywell F100F filters. Completely box-formed with no assembly or combs required. MERV rated to ASHRAE 52.2 test specifications establishing filtration as good or better than the original brand Honeywell F100F filter. Notice: Sample filter pic shown is not the actual dimensions and is shown for construction only. OEM names and Honeywell F100F part numbers displayed for air filter replacement identification use.