CFL Ballast Ballast Type Electronic Ballast Family SmartMate(R) Input Watts 93 Ballast Voltage 120/277 Min Starting Temp 0 Degrees F Ballast Start Type Rapid Ballast Max Number of Lamps 2 Ballast Lamp Type Compact Fluorescent Ballast Max Lamp Watts 70 Dimension Reference A39 Base Type 4 Pin Ballast Dimming No Length 4-1/5 In. Ballast Dimming Type No Dimming Width 3 In. Height 1-3/10 In. Light Output Normal Special Features Dual Connector