Description
Actual size is 19.5 x 19.5 x 3.75. Accumulair brand: 20x20x4 White-Rodgers FR1600M-111 style whole house filters, specifically designed to substitute for the original manufacturer White-Rodgers FR1600M-111 filters. Fully built so no assembly or combs required. MERV rated to ASHRAE 52.2 test specs establishing filtration equal to the name brand White-Rodgers FR1600M-111 air filters. Notice: The sample filter pic as shown is not to scale and is displayed for configuration purposes only. OEM names and White-Rodgers FR1600M-111 identifier displayed for filter style purposes only.