Description
Actual Dimensions: 19.5 x 19.5 x 3.75. Brand: Accumulair. 20x20x4 20x20x4 Top Tech replacement whole house filters, specifically constructed to replace OEM 20x20x4 Top Tech air filters. Fully box-formed so no forming or combs required. MERV rated to ASHRAE specs assuring performance equal to the OEM 20x20x4 Top Tech filters. Note: Sample air filter image as shown is not true to size and is shown for style purposes only. OEM names and 20x20x4 Top Tech P/N shown for air filter replacement identification only.