The dry steel vacuums are designed for industrial and commercial cleaning. The "Trap-Sack" dry filtration system is standard and includes removable cloth filter and large totally enclosed disposable paper filter bag for greater filtration area. The filter bag makes it easy to dispose of collected material. Features: -Durable steel air-thru 1 HP motor designed for fast removal of dirt, litter and soot. -Caster and glidemobile models: The 605 and 1005 Vacuums are equipped with four 2.5" Ball bearing casters and the 1505 glidemobile style with chrome handle comes with two 2.5" Ball bearing front casters and two 8" Rear wheels. -Vacuums are equipped with: Dry filter assembly, 5 Pack of filter bags, and 1.5" Wet/dry tool kit. -Cold rolled tanks feature reinforcing ribs to strengthen tanks for handling higher waterlift, the durable roll over bottom seal prevents leaking. -Tank finish: Finished with baked enamel exterior and epoxy interior. -Convenience outlet.