The only air purifier that automatically responds to occupancy and air quality levelsDelivers 3-5 air changes per hour (ACH) in 150-250 square feet spaces. Perfect for smaller shared spaces such as restrooms and officesPatented EnviroSmart technology continuously monitors occupancy and room air quality and automatically adjusts to clean the air4-stage True HEPA filtration system removes 99.97% of all airborne contaminants, including virusesAntimicrobial HEPA treatment prevents bacteria growth on the filter and activated carbon filter reduces odors and VOCsCommercial grade wall mount air purifier with slim profile. Floor stand accessory and ADA compliant recess kit also available