WKF series shell-less fan is designed from the angle of economic, efficient and working-space-saving and does not have the volute that an ordinary centrifugal fan has. It is mainly used in the closed space area or air treatment machines of buildings, providing pressurized air for the entire environment inside them, so air ducts are allowed to connect the air treatment machines from any direction. Such design saves space because there is no fan volute, switching section and expansion section inside the air treatment machine.
