The Eurovac II Sanding Portable allows two technicians using Orbital Sanders to work at the same time, or a single technician using a Grinder, Hand Saw, or Router. This Eurovac Portable features a powerful 2.5HP, 1440 watt motor that produces significantly more suction than other portables on the market. As well, the combination of a cyclone, plus a cartridge filter, adds up to superior filtration – and means that the unit continually operates at maximum efficiency. The primary cyclonic filtration removes 85% of sanding dust before it reaches the secondary cartridge filter. This results in a longer life and less cleaning required for the cartridge filter. The super-efficient filtration system was specially designed for vacuum sanding. The unit turns on and off automatically when tools are activated or deactivated ... maximizing the operating life of the Eurovac II Sanding Portable's motor.