The Helios ASD-SGD 250 is a robust bell mouth and guard assembly designed to ensure efficient and safe air intake in ventilation systems. Constructed from galvanized steel sheet for superior corrosion resistance, the large-diameter intake nozzle promotes optimal airflow. The integrated protective guard enhances safety by preventing the ingress of debris or contact with internal components. A precision-formed side flange with a hole pattern compliant with DIN 24155 allows for straightforward and secure installation in standard ducting systems. Suitable for industrial and commercial applications, this intake unit supports long-lasting performance and reliability.