AllerAir Air Medic purifiers intake air 360-degrees to completely eliminate chemicals, particles, gases and odors within a 1,500 sq. foot area. Heavy concentrations of chalk or paint fumes do not have to be a concern because the AllerAir Air Medic purifiers have deep-bed, activated carbon filters. A Pro Dense pre-filter blocks large particles to prevent clogging, ensuring longevity of these air purifying systems. The micro-HEPA filter is medical grade and removes 99.99% of airborne particles as small as 0.3 microns. These air purifiers feature variable speeds for airflow. The AllerAir Air Medic makes health a priority.AllerAir Air Medic is the most efficient air purifying solution to keeping the air clean for your health.