3 IN 1 AIR PURIFIER FOR HOME : True HEPA air filter reduces up to 99.97 percent of harmful germs, dust, pollen, pet dander, mold spores, and other allergens as small as .3 microns from the airKILLS GERMS : UV C light helps kill airborne viruses such as influenza, staph, rhinovirus, and works with Titanium Dioxide to reduce volatile organic compoundsTRAPS ALLERGENS : Pre filter traps dust, pet hair, and other large particles while extending the life of the HEPA filterREDUCES ODORS : Activated charcoal filter helps to reduce unwanted odors from pets, smoke, cooking fumes, and moreQUIET OPERATION The lowest setting can be used as gentle white noise at night for a quiet, restful sleepSETTINGS : Choose between 3 speed settings and an optional UV C lightROOM SIZE : 22 inch purifier filters air 4x per hour at max speed in medium to large rooms up to 167 square feet. CADR RATING: Dust (118) Pollen (125) and Smoke (108)GENUINE REPLACEMENTS : Only use Genuine GermGuardian replacement parts to maintain performanceREPLACEMENTS : Replace the filter every 6 to 8 months and the UV C bulb every 10 to 12 months. Filters: GermGuardian filter B (model FLT4825) or a 4 pack of GermGuardian carbon filters (model FLT22CB4). UV C Bulb: Model LB4002AHAM VERIFIED & ENERGY STAR CERTIFIED : This air purifier was rated for its ability to filter tobacco smoke, dust, and pollen from rooms and be Energy Star Certified and CARB compliant; Cord Length: 6'