Luma Comfort AP170W Air Purifier Replacement Filter Pack, HEPA/Carbon/VOC/TiO2 HEPA filter traps more than 99% of particles as small as 0.3 microns Carbon filter deodorizes the air and traps large particles VOC filter absorbs harmful airborne chemicals like those found in paint, carpet, solvents and more TiO2 Filter works with the UV light source to destroy harmful bacteria and gases Includes all filters needed for AP170W unit