Sunlite 40310-SU SB100/MH/QT 100-watt Metal Halide Ballast Quad Tap Ballast Kit, Multi volt Use With 1 - 100 Watt M90 or M140 MH Lamp Voltage 120/208/240/277 Ground Ballast Core And Capacitor Case Quad Tap: 60Hz, UL Listed SB100/MH/QT