Description
Actual dimensions are 15.75 x 24.25 x 3. Accumulair brand 16x25x3 GeneralAire 4521 substitute whole house filters, exactly built to substitute for the original manufacturer GeneralAire 4521 filters. Completely assembled with no assembly or combs needed. MERV graded to ASHRAE 52.2 test grades establishing performance to the level of the original manufacturer GeneralAire 4521 air filters. Note: The sample air filter pic shown is not to scale and is included to show design only. Company names and GeneralAire 4521 P/N displayed for air filter style identification purposes only.