Description
Actual Size: 19.75 x 24.25 x 4.75. Accumulair brand, 20x25x5 GeneralAire 4001 replacement whole house filters, specifically constructed to substitute for the name brand GeneralAire 4001 air filters. Completely built - no forming or combs needed. MERV rated to ASHRAE 52.2 test ratings ensuring filtration to the level of the original manufacturer GeneralAire 4001 filters. Note: The sample filter pic displayed is not to scale and is displayed for construction purposes only. Brand names and GeneralAire 4001 identifier are included for air filter replacement purposes only.