Description
Actual size is 19.75 x 19.88 x 4.38. Accumulair brand: 20x20x5 Honeywell 203721 compatible whole house air filters, specifically built to replace the name brand Honeywell 203721 filters. Fully built - no forming or combs needed. MERV graded to ASHRAE grades establishing particle filtration as good or better than the name brand Honeywell 203721 filters. Photo: The sample filter pic as displayed is not to scale and is shown for style purposes. Company names and Honeywell 203721 part numbers used for filter replacement identification purposes.