AirClean® Systems, as a leading manufacturer of ductless fume exhaust hoods, workstations, and enclosures, realizes that all applications can not effectively or safely be manipulated in a ductless hood, workstation or enclosure. Total exhaust hoods are required for highly toxic or large-scale applications. AirClean® Systems manufactures a complete range of polypropylene exhaust hoods for high-volume or corrosive applications.