DESC: Sleek Hepa Air Purifier, Appealing Design With Translucent Back Lit Controls, 99% Efficient At Reducing Airborne Particles, Such As Dust, Pollen, Tobacco Smoke, Pet Dander & Mold Spores From The Air That Passes Through It, Built In Ionizer For Extra Cleaning Power, Washable Pre-Filter, Pro-Tec Treated Filter Helps Prevent Mold Growth On The Filter, Odor Lock Filter Technology, Can Use In Horizontal Or Vertical Position For Smaller Areas.