Profile: Buffalo Fan specializes in providing industrial fans and ventilators, commercial ventilation equipment, pressure blowers, high temperature oven fans, centrifugal and axial ventilators. We offer custom engineered solutions, packaged fans, blowers, ventilators and customized industrial process ventilating equipment. A direct drive general Type CBU Propeller Fan designed for use in commercial and industrial applications where low sound levels are important and relatively low CMFs are appropriate.