Description
Actual dimensions are 19.75 x 19.88 x 4.38. Accumulair brand, 20x20x5 Honeywell F25F1018 compatible whole house filters, exactly constructed to replace original brand Honeywell F25F1018 filters. Fully constructed so no assembly or combs needed. MERV rated to ASHRAE specs establishing particulate capture equal to the original brand Honeywell F25F1018 air filters. Notice: The example air filter image shown is not true to size and is shown for style only. Trade names and Honeywell F25F1018 identifier are listed for air filter substitution purposes only.