The Helios ASD-SGD 400 is a robust bell mouth and guard unit engineered for high-efficiency air intake in industrial ventilation setups. Fabricated from galvanized steel, it offers superior durability and protection against corrosion. The unit features a large-diameter intake nozzle paired with a protective mesh guard to prevent foreign objects from entering the system. Installation is made easy with an adjacent flange that includes a hole pattern conforming to DIN 24155 standards. Designed to deliver optimal airflow and long-term reliability, the ASD-SGD 400 is a key component for maintaining safe and efficient ventilation performance.