High-Efficiency Filtration This Toshiba Air Purifier includes 3 filters (Pre-filter, HEPA filter, Activated carbon) to capture 99.97% of airborne particles 0.3 microns such as smoke pets dander, mold, pollen, allergen, and dust from the air. Ideal Air Purifier for Home Air purifier works in medium to large rooms up to 222 sq. Ft. 3 speed setting from low to high speed will satisfy different demands. Powerful UV Light Sanitizer Kills germs and airborne viruses such as influenza, staph, and rhinovirus, UV air purifier create a healthy environment for you and your family. Quiet Operation As low as 32dB under Sleep mode, you can sleep in a restful and soothing indoor environment.