Description
Actual Size: 16.63 x 26 x 4.13. Accumulair brand: 17x26x4 Lennox X6664 replacement whole house filters, exactly designed to replace the OEM Lennox X6664 filters. Completely box-formed with no assembly or combs required. MERV graded to ASHRAE 52.2 test classifications assuring performance equal to the OEM Lennox X6664 air filters. Notice: Example air filter picture as displayed is not to scale and is included to show design only. Brand names and Lennox X6664 part numbers included for air filter replacement identification purposes only.