The 71JM/20/4/6/30-deg long cased axial fan is a 4‑pole, 3‑phase fan suitable for a variety of industrial and commercial ventilation applications. Its axial design allows efficient airflow through ductwork and ventilation systems, while the long case housing provides stable and secure installation. This fan is commonly used to support air extraction, general ventilation, and air circulation in workshops, manufacturing areas, plant rooms, and other operational environments. Designed for continuous duty, it offers dependable performance and consistent airflow where reliable ventilation is required.