Description
Actual dimensions are 19.5 x 19.5 x 3.75. Accumulair brand: 20x20x4 White-Rodgers ACM1600M style whole house air filters, exactly built to substitute for the OEM White-Rodgers ACM1600M filters. Completely assembled with no assembly or combs required. MERV graded to ASHRAE 52.2 test specs assuring performance equal to the original brand White-Rodgers ACM1600M air filter. Notice: Sample air filter image displayed is not the actual dimensions and is included to show design purposes. Trade names and White-Rodgers ACM1600M P/N included for air filter replacement identification.