Description
Actual Dimensions: 20 x 20.63 x 4.38. Accumulair brand 20x21x5 Lennox X8790 replacement whole house air filters, exactly built to replace original manufacturer Lennox X8790 air filters. Completely constructed with no assembly or combs needed. MERV classified to ASHRAE classifications ensuring particle filtration to the level of the OEM Lennox X8790 air filters. Notice: Sample air filter pic as displayed is not the actual dimensions and is displayed for style purposes. Name brands and Lennox X8790 part numbers are shown for filter replacement identification purposes.