Axial high-performance fan with adjustable blades when stationary, square mounting plate, inlet nozzle, directly driven, explosion-proof in accordance with ATEX. The square mounting plate features a moulded-on nozzle made of galvanised sheet steel. The impeller has 7 blades made of thermoplastic, ensuring high efficiency and low operating noise. It operates vibration-free thanks to dynamic balancing in accordance with quality level G 6.3 VDI 2060 and DIN ISO 1940. This fan can be used in the temperature range from -20 °C to +40 °C. It has a surface resistance of less than 1 GOhm. The three-phase squirrel-cage motor is of enclosed design, maintenance-free, sealed, and equipped with low-noise ball bearings with long-term lubrication, and it is not adjustable. Ex version according to ATEX.