The 47J URAI-J blower has a 4 inch gear and a 7 inch rotor length. The NPT connection is 3 inches with a shaft diameter of 0.875 inches. Please refer to the installation and operation manual for more technical information about model 47J URAI-J. For better assistance with ordering model 47J URAI-J please contact air blower services.
Reference BOM #74087020 or 47J URAI-J