DESC: The Kenmore Electrostatic Air Cleaner quickly and effectively reduces airborne allergens and irritants in larger rooms of your home or home office - using a 3 stage cleaning system. Pre-filter collects large particles, the collecting cell charges and attracts smaller particulates, and lastly, an ionizer revitalizes the clean air. The washable filter system saves time and money because it eliminates buying or replacing extra filters. Control panel with LCD puts all the controls at your fingertips.