DESC: The Oreck Super Air 7 Air Purifier is designed to "vacuum" the air in your home and trap airborne dirt before it settles. 24 hours a day, seven days a week, the Oreck Super Air 7 Air Purifier traps allergens like dust, lint, pollen, pet dander, smoke, mold spores, bacteria and dust mites. In fact, it traps particles as minute as 0.1 microns or one thousand times smaller than a single human hair. That means it also removes the dirt you never see!