The Purashield 500 is ideal for use in educational institutions, hospitals, medical facilities, dental offices, dental labs, senior living facilities, office buildings, laboratories, and restaurants.
 47 - 250 CFM
 Uses a disposable 4-layer filter
 Equipped with a filter layer protected by PuraWard technology
 Includes 22 lbs of Purafil's patented molecular filtration media
 HEPA filtration for harmful particulate matter