BSM Axial fans comprise of 9 models in 8 sizes. BSM 250 model is available also in high speed. They are manufactured according to impeller diameters 250, 300, 350, 400, 450, 500, 550, 600 mm. Airflow performances of free inlet-outlet BSM series are from 1200 m3/h to 8000 m3/h and pressure up to ……Pa.