The BF 50 is used in Tunnel houses as well as in Combi-Tunnel houses for side mode and tunnel mode ventilation. The fan is available in stepless (0-100%) variants, as well as traditional ON/OFF variants. The stepless variants ensure a 100% stepless system where the animals’ ventilation requirements are met in the most optimum way – always providing the correct air velocity. You can also combine the BF 50 with other fans of the BlueFan family to keep the animal welfare and investment in focus.