Unique, four level filtration means that dirt enters the machine and collects in a disposable paper filter. Air passes through to the cloth filter, then the motor protection filter and finally through an exhaust filter for exceptional filtration. For convenience, there's an easy-to-reach on/off switch, top fill bag design, 50-foot power cord and attached five-foot hose, telescoping wand and easy-roll floor tool. The ample hose can be positioned straight down and used with ease in either hand. Upholstery, crevice and dusting tools can also be added to meet the operator's particular needs. Exhaust air is diffused and directed away from cleaning areas. Dual, non-marking bumpers and concealed latches protect walls, furniture and doors. Easy-to-carry handle makes storage simple and efficient. Minuteman's durable BPV is made of injection molded polyethylene, the Back Pack Vac (BPV) features a powerful two-stage 1.25 hp flow-through vac motor. For extreme conditions, the BPV is available in a 1.6 hp flow-through vac motor and a 1.4 hp bypass vac motor.