Description
Actual dimensions are 19.88 x 24.88 x 4.38. Accumulair brand, 20x25x5 Lennox X6661 replacement whole house air filters, specifically designed to replace original manufacturer Lennox X6661 filters. Completely built so no assembly or combs needed. MERV classified to ASHRAE 52.2 test specs establishing particle capture as good or better than the OEM Lennox X6661 filters. Note: Example air filter pic shown is not to scale and is there to show configuration purposes. Name brands and Lennox X6661 identifier shown for air filter replacement purposes only.