LightAir. Featuring a patented ozone-free ionization process and traditional electrostatic filtration, the IonFlow 50 product line helps remove dust, dirt, pollen, mold, and other contaminants to improve indoor air quality. Each unit comprises an aluminum collector to trap pollutants within an area of up to 540 square feet. Operating at less than 5 decibels of noise, and emitting no ozone, the IonFlow 50 removes airborne particles measuring between 25.0 and 0.01 microns, as well as harmful nano particles smaller than 0.1 microns. Choose from floor, tabletop, or hanging models. www.lightair.com.