Profile: Kovolff Fans specializes in the design, production and sales of custom axial flow fans. Our product line includes jet fans, middle pressure fans and tandem fans. Our middle pressure fans feature volumetric rates up to 140,000 m3/h & 1400 pa static pressure, casing, impeller and motors. Our tandem fan features include casing that is made up of hot-dip galvanized steel, impeller and motors.