Lennox Carbon Pre-Filter 92x09. This Lennox Charcoal Carbon Filter 92X09 offers a revolutionary 3 stage filtration process, used to create a very effective filtration system. Each individual filter is independent and can be changed. It is recommended that you replace your Lennox Charcoal Carbon Filter 92X09 every 2-5 years, for optimum performance.

Lennox Genuine OEM Inner Charcoal Pre-Filter 92X09 fits Models: HEPA-40, HEPA-60.

The carbon pre-filter removes larger particulates from the air
Designed to capture 99.97% of particulates down to 0.3 micron that pass through it
The inner charcoal filter is 1/2 an inch thick to give it plenty of surface area for removing chemicals and odors from the air