Description
Actual Size: 20 x 20.63 x 4.38. Brand: Accumulair. 20x21x5 Lennox X8790 style whole house filters, exactly designed to be an alternative to the original brand Lennox X8790 filters. Fully built so no forming or combs needed. MERV rated to ASHRAE 52.2 test specs ensuring filtration to the level of the OEM Lennox X8790 filters. Photo: Example air filter picture as shown is not to scale and is displayed for construction only. Brand names and Lennox X8790 P/N included for filter substitution identification only.