Actual size is 22.13 x 24 x 5.25. Accumulair brand: 22x24x5 Janitrol GMAC-L substitute whole house filters, exactly engineered to replace OEM Janitrol GMAC-L air filters. Completely assembled with no assembly or combs required. MERV rated to ASHRAE 52.2 test specs ensuring operation to the level of the original brand Janitrol GMAC-L air filter. Note: Sample air filter image shown is not to scale and is included to show style purposes only. Name brands and Janitrol GMAC-L P/N included for air filter substitution identification.