This peculiarity allows to use it in all the applications, as for instance in timber drying kilns, where it is necessary to reverse the airflow using the same fan.

The possibility to choose impellers with diameter from 500 to 1000 with 2, 4, 5, 8 and 10 blades, in the different angles of inclination, 25° , 30° , 35° , 40° , 45° , 50° almost consents infinitive possible configurations.

The elevated aerodynamic efficiencies attributable to the perfect profile of the blade and the optimal ratio number of blade-diameter impeller. The extreme strength and reliability testified by thousand of supplies during the years.

The ease to modify, also on site and without possibility of errors, the pitch angle of the blade thanks to the special insert marks degrees. This aspect permits the saving of precious working hours, it consents to reduce the provisions and above all to avoid the disagreeable consequences of an unbalanced impeller (vibrations, break-ups, anomalous absorptions, etc....