Description
Actual dimensions are 15.5 x 19.5 x 3.75. Accumulair brand 16x20x4 16x20x4 Top Tech compatible whole house air filters, specifically built to substitute for the original manufacturer 16x20x4 Top Tech filters. Completely box-formed - no forming or combs needed. MERV rated to ASHRAE grades ensuring function equal to the original manufacturer 16x20x4 Top Tech air filter. Note: The sample filter pic as shown is not to scale and is there to show design purposes. Name brands and 16x20x4 Top Tech P/N are shown for filter replacement identification purposes only.