Description
Actual Size: 20 x 20.63 x 4.38. Accumulair brand: 20x21x5 Lennox X8790 replacement whole house air filters, specifically constructed to substitute for the name brand Lennox X8790 air filters. Fully built with no forming or combs required. MERV graded to ASHRAE classifications establishing particulate capture equal to the name brand Lennox X8790 filter. Photo: The sample filter pic as shown is not to scale and is displayed for design only. Brand names and Lennox X8790 P/N shown for air filter substitution identification purposes only.