Actual Dimensions: 15.38 x 25.5 x 5.25. Accumulair brand, 16x25x5 Westinghouse BB1625 style whole house air filters, specifically engineered to substitute for the name brand Westinghouse BB1625 air filters. Fully box-formed - no forming or combs needed. MERV graded to ASHRAE classifications ensuring particle capture as good or better than the name brand Westinghouse BB1625 air filters. Note: The example air filter picture as displayed is not the actual dimensions and is included to show construction purposes only. Company names and Westinghouse BB1625 part numbers are used for air filter style identification use.