Description
Actual Size: 19.88 x 24.88 x 4.38. Accumulair brand: 20x25x5 Lennox X6661 compatible whole house air filters, exactly engineered to substitute for the original brand Lennox X6661 air filters. Completely built - no assembly or combs required. MERV rated to ASHRAE 52.2 test specs ensuring particulate capture equal to the name brand Lennox X6661 filters. Note: The example filter image as shown is not true to size and is displayed for configuration only. Company names and Lennox X6661 P/N included for filter substitution identification.