A popular choice for recovering large amounts of concrete dust and other construction/restoration debris. Dual vacuum motors and two tested and certified HEPA filters make this a powerful, clean-air machine suitable for dust ridden, difficult and dirty jobsites. Primary sock-style filters and dual tested and certified HEPA filters provide long, uninterrupted service and clean-air exhaust. Jet Pulse negative air pressure and unique "Longopac" allows efficient filter cleaning and direct dust free disposal into plastic bags. A 17 foot hose, wand and floor attachment is included.