Description
Actual size is 19.75 x 19.88 x 4.38. Accumulair brand, 20x20x5 Honeywell F25F1018 style whole house air filters, exactly constructed to replace original manufacturer Honeywell F25F1018 filters. Fully box-formed - no forming or combs required. MERV graded to ASHRAE grades assuring function as good or better than the name brand Honeywell F25F1018 filters. Notice: Sample air filter picture as shown is not true to size and is there to show configuration purposes. Trade names and Honeywell F25F1018 P/N are included for filter replacement purposes.