Description
Actual size is 19.75 x 24.25 x 4.75. Accumulair brand 20x25x5 GeneralAire 4001 substitute whole house filters, specifically constructed to replace the original brand GeneralAire 4001 air filters. Fully built with no forming or combs needed. MERV classified to ASHRAE standards assuring particle capture equal to the original manufacturer GeneralAire 4001 filter. Photo: The sample filter pic as displayed is not the actual dimensions and is displayed for design purposes. Name brands and GeneralAire 4001 P/N displayed for air filter substitution identification purposes.