Description
Actual size is 16.63 x 26 x 4.13. Accumulair brand: 17x26x4 Lennox X6666 compatible whole house air filters, specifically built to replace the original manufacturer Lennox X6666 air filters. Completely constructed so no forming or combs needed. MERV rated to ASHRAE grades assuring particle filtration to the level of the OEM Lennox X6666 air filters. Note: Sample air filter image shown is not to scale and is there to show design purposes. Company names and Lennox X6666 identifier are included for air filter substitution identification only.