Description
Actual Size: 19.5 x 19.5 x 3.75. Brand: Accumulair. 20x20x4 20x20x4 Top Tech style whole house filters, exactly built to be an alternative to the name brand 20x20x4 Top Tech filters. Completely constructed - no forming or combs needed. MERV rated to ASHRAE 52.2 test grades establishing filtration as good or better than the name brand 20x20x4 Top Tech air filter. Notice: The sample air filter image as displayed is not to scale and is displayed for style purposes. OEM names and 20x20x4 Top Tech part numbers displayed for air filter replacement purposes only.