The Ruck ELKI 7040 D2 10 is a 3‑phase mixed flow box fan designed for high-efficiency, reliable ventilation. It features an efficiency-optimized diagonal impeller with CFD-optimized aerodynamics to provide stable and consistent airflow. The fan is housed in a soundproof galvanized sheet steel casing to reduce noise and increase durability. The removable fan unit allows for easy maintenance and cleaning. Powered by a frequency-controllable IE3 motor, the fan delivers energy-efficient operation. Important: This model is designed for 230 V power supply only; 3×400 V operation is forbidden. FU-operation instructions must be followed as detailed in the operating manual. Suitable for commercial, industrial, and specialist ventilation applications requiring low-noise, high-performance airflow.