FireHorse, Electronic, Emergency Fluorescent Ballast, Input Voltage 120 to 277V AC, Number of Bulbs Supported 1, 2, Max. Bulb Watts 42 W, Circline, Quad Tube, T5/T5HO, T8, Triple Tube, Twin Tube Ballast Bulb Type, Initial Lumens 500 lm, Steel Housing...