The Mi-T-M Industrial Wet/Dry Vacuums are stackable, easy to operate and designed for professional use. The vacuums feature a 1.6 HP electric motor with a self-cooling design and a wet and dry hydro flow filter with an efficiency of 99.5 percent to 1.0-micron. The vacuum uses exhaust air ducting to deduce motor contamination. Available in 13-gal or 8-gal capacity.