Axial high-performance fan with a wall mounting ring and inlet nozzle, directly driven. The wall ring is made of galvanized sheet steel, painted twice in papyrus white. The nozzle features a guard grille on the suction side. There is a terminal box on the motor. The impeller has high-performance characteristics with profiled blades made of plastic, aerodynamically optimized for the application, and dynamically balanced. It has a single-phase AC capacitor motor with an enclosed design, maintenance-free, and thermal contacts built into the winding. The speed is controllable by voltage reduction, and it has sealed, low-noise ball bearings with long-term lubrication, making it reversible.