SL160 3Q 04S Electrostatic Ionic Air Purifier. Eliminate airborne contaminates such as dust, pollen, mold, smoke, pet dander, and bacteria, germs, allergens. High electrostatic plate traps the dust, pollen, smoke etc.as small as 1 micron ... Was hit around the corner and the smell of the fresh breeze me. It was so beautiful! The only way I could describe the air that is to say, it smelled mountain air above with a waterfall nearby. That's how fresh it smelled clean......