The Lasko HF25630 Pure Platinum Slim Profile Air Purifier with UV light and fresh air ionizer features a 3-stage filtration system ideal for fresher cleaner air. The carbon filter removes smoke plus cooking and household odors. It also captures dust pet hair and other large particles. Effective up to four months the carbon filter extends the life of the HEPA filter. The HEPA filter removes 99% of airborne irritants as small as 0.3 microns and is effective up to 12 months. Also effective up to 12 months the TiO2 filter with UV long-life light helps eliminate mold bacteria and viruses. With a space-saving slim-profile design the Pure Platinum Air Purifier is perfect for bedrooms living rooms and home offices up to 200 square feet.