A large mixed flow fan has the benefits of both an axial and centrifugal fan with high efficiency and reasonably good balanced performance. The distinctive feature of these fans is the blade construction, which permits air entry at the axial direction and air exit at an intermediate angle. It produces high volume flow of air at a moderate pressure. Fans of this type can be used in places where considerable quantities of air must be moved over medium distances. These fan types are exceedingly good for ventilation systems in industries, HVAC systems in large commercial buildings, and cooling systems in various manufacturing plants. With improved aerodynamics, mixed flow fans of larger sizes can maintain peak performance while optimizing energy efficiency at the same time. They also allow for simple servicing which makes them ideal for a wide array of industries. These fans are engineered with technologies to effectively reduce noise and operational sound in multiple settings.