Sunlite 40170-SU SB254HOMV 2 Lamp F54 T5 High Output Linear Fluorescent Ballast, Multi volt Suitable use with one or Two F54T5 High Output Lamps Suitable use with one or Two FC40T5 Lamps Suitable use with one or Two F55W/2G11 or F50/2G11 Lamps Multi Voltage Ballast 50/60Hz, UL Listed