Filter Hut 17x26x4 Lennox (X6664) style filters are specifically engineered to substitue for the OEM Lennox 17x26x4 air filters. Our air filters are MERV rated to ASHRAE 52.2 test standards assuring that our filters will perform as good or better than the name brand part number (X6664) air filter. Our filters can be selected with Odor Ban odor filtrating carbon technology. *Trade names are shown for filter style identification purposes only.
- 17 x 26 x 4 nominal size.
- 16-5/8 x 26-3/4 x 4 actual size.
- Replaces Lennox brand 17x26x4 part number: X6664.
- Envaero brand by Quality Filters.
- Designed to substitute for the OEM filter.
- Filters framed and preassembled for ease of intallation. (No end caps needed, don't need expanded with combs, etc.)
MERV graded to ASHRAE classifications.
- Option of Odor Ban odor filtrating carbon media.
- 2 air filters per case.