Description
Actual Size: 19.5 x 19.5 x 3.75. Accumulair brand 20x20x4 20x20x4 Top Tech replacement whole house air filters, specifically constructed to replace original brand 20x20x4 Top Tech air filters. Completely assembled - no forming or combs required. MERV graded to ASHRAE 52.2 test classifications assuring function as good or better than the original manufacturer 20x20x4 Top Tech filter. Notice: The sample air filter image shown is not true to size and is displayed for configuration purposes only. Name brands and 20x20x4 Top Tech P/N are included for air filter replacement identification purposes only.