Description
Actual Dimensions: 16.63 x 26 x 4.13. Brand: Accumulair. 17x26x4 Lennox X6666 replacement whole house filters, exactly constructed to be an alternative to the name brand Lennox X6666 air filters. Completely box-formed so no forming or combs required. MERV graded to ASHRAE 52.2 test ratings establishing particulate capture as good or better than the name brand Lennox X6666 filter. Note: Example filter picture as displayed is not to scale and is there to show design purposes only. Name brands and Lennox X6666 P/N shown for air filter substitution identification use.