Description
Actual dimensions are 19.75 x 24.25 x 4.75. Accumulair brand: 20x25x5 GeneralAire 4001 replacement whole house filters, exactly built to be an alternative to the original manufacturer GeneralAire 4001 filters. Fully assembled - no forming or combs needed. MERV rated to ASHRAE 52.2 test classifications ensuring particulate filtration equal to the OEM GeneralAire 4001 air filters. Note: The sample air filter image as displayed is not true to size and is there to show configuration purposes only. Trade names and GeneralAire 4001 P/N shown for filter substitution identification use.