Envion 90TP201TW01 Therapure 201 UV Germicidal/HEPA Type Filtration Air Purifier SILENT HEPA-TYPE AIR PURIFIER removes allergens, pollutants, toxic fumes, and unpleasant odors POWERFUL UV GERMACIDAL LIGHT kills airborne bacteria, germs, and viruses, and reduces fumes and chemicals found in paint and carpet fumes EASY TO CLEAN FILTER - no replacements needed SIMPLE KNOB SWITCH conrols 3-speed fan settings for desired level of cleaning SLEEK TOWER DESIGN makes it perfect for medium and large rooms at home or the office