The VPF Series plug fan is a compact, housing-free fan designed for optimal performance in clean or mildly dusty air environments. It is specifically engineered to achieve peak aerodynamic efficiency in ventilation and air conditioning systems. Directly powered by an electric motor, this fan is tailored to meet the demands of commercial and industrial applications, ensuring satisfactory indoor air quality and thermal comfort within Air Handling Units (AHUs). Its advanced design includes a high-efficiency backward curved metal impeller with a powder coating finish, an aerodynamic inlet cone, and a robust structure constructed from galvanized steel.