Centrifugal Upblast Exhaust Fans - Greenheck Fan
Products » Roof Mounted Fans » Centrifugal Upblast Exhaust Fans. Centrifugal Upblast Exhaust Fans. The Centrifugal Roof Upblast exhaust fans include both direct and belt drive options with efficient backward inclined centrifugal wheels and aerodynamic inlet cone minimizing system effects.