The O.C. White 50010 Ultra Exhaust Fan provides 550 CFM of air moving power, making it the ideal fan for welding or large fume removal jobs. The UL/CSA fan is equipped with dual finger guards for excellent protection from debris. The fan has a table edge clamp and may be adjusted to move air in either direction. It is mounted on 43-inch Ultraflex arms for dependability, strength and easy movement. The ESD safe construction makes it suitable for use in areas with sensitive components.