COMPACT WELDING FUME EXHAUST UNIT The Prism Direct Exhaust Fan is a light weight; non-filtration; welding fume exhaust unit designed to remove welding fumes from air restricted locations. The sturdy handle and base makes it easy to move and place anywhere on a job site. Economical fume movement and ventilation option. Easily disassemble the unit for cleaning and maintenance. Maximum extraction distance up to 32 ft. (9.7 m). Quiet operation. Lightest weight option in the market. Easily move throughout a job site/location.