EC axial high-performance fan Square mounting plate made of galvanized sheet steel with additional two-layer paint in papyrus white. Protective grille made of powder-coated steel, in accordance with DIN EI ISO 13857. Impeller with high-performance characteristics with profiled blades made of plastic, aerodynamically optimized for the application, dynamically balanced. Energy-saving, speed-controlled EC external rotor motor with protection class IP 54 with maximum efficiency. Maintenance-free and free from radio interference, excellent electromagnetic compatibility (EMC), ball bearings. Integrated electronic temperature monitoring for EC motor and electronics. Can be controlled continuously via speed potentiometer. Control via three-stage switch or continuously via universal control system or electronic differential pressure/temperature controller.