Nilfisk-Advance America Inc.:The GWD 255 Drum Vac is designed to meet the general plant cleaning and maintenance needs of manufacturers throughout various industries. It is powered by two independent bypass motors and can fit both 30- and 55-gallon drums, allowing users to recycle drums that are abundant in nearly every production plant. An optional float chamber and washable cartridge filter allow the GWD 255 to pick up both wet and dry materials, and the machine can also be fitted with an upstream HEPA filter for pick-up of hazardous materials, ensuring 99.97% of particles are retained, down to and including 0.3 microns in size. Visit