Holmes,Oscillating UV air purifier tower. The slim and tall tower structure is designed to fit into any corner of a room unobtrusively and still effectively treat the air around you. True HEPA filter system is extremely efficient and can be relied upon to remove airborne allergens from the home along with UV and Oscillation. True HEPA-Type filtration removes 99.97% of airborne particles as small as 0.3 microns from the air that passes through the filter UV Light & Ionizer helps capture smaller particles and destroy germs and bacteria Oscillation and 4-speed setting keeps fresh and pure air circulating throughout the room 161 CADR ideal for large rooms up to 250 sq ft. Capacitive touch controls lets you easily control the air purifier settings - from speeds to timer. Filter Life indicator light lets you know when it's time to get change your filter. 24-hr timer lets you keep air flowing at any time of the day.