Wheel Diameter- 254 mm – 3000 mm. Performance- 1500 – 850000 CMH upto 150 MM WG SP in single & 300 MM WG in double stage. Mounting- Floor mounting. Application- These fans are generally provided for handling large volume of air at comparatively higher pressure. These are provided with outlet guide vanes and may or may not be provided with inlet guide vanes. These fans are used for surface mine ventilation and industrial process cooling application.