For operating ventilation shafts of multi-bay greenhouses, as deflection gear units between central drive shaft and worm gear unit VRE in the ridge. Steel housing with spur gear unit, hardened. The shaft can be inclined upwards by 34 deg. max. Hollow shaft for passing the central 1" drive tube through. Loading direction and installation position as required, max. rotation speed 40 rpm. Max. duty cycle 30%. Other connection sizes (D), articulated coupling and adapters for outgoing tube on request. minimum order quantity 5 pcs