500mm Duct Fan, 3 Phase with speed controller, will be cleaned before sent. The Flakt Woods intake/extract fan motor with speed controller is a high-quality product designed for improving air quality in heating, cooling, and ventilation systems. This three-phase motor from the reputable brand Flakt Woods ensures efficient and reliable operation, whether for extracting or introducing air into a space. With the added benefit of a speed controller, this fan motor allows for adjustable airflow to meet specific needs, making it a versatile and essential addition to any home or commercial setting.