Description
Actual Size: 20 x 20.63 x 4.38. Brand: Accumulair. 20x21x5 Lennox X8790 compatible whole house air filters, exactly constructed to substitute for the original brand Lennox X8790 air filters. Fully assembled with no assembly or combs needed. MERV classified to ASHRAE 52.2 test grades ensuring performance equal to the name brand Lennox X8790 filter. Photo: The sample filter pic as shown is not to scale and is displayed for style purposes only. Name brands and Lennox X8790 P/N shown for air filter style identification use.