GE Multi-Volt ProLine™ Electronic Fluorescent Ballast, T8/T12 Lamp, 48/60/70/72/96 W, 120/277 VAC, 60 Hz, Rapid Start, -20 deg F Minimum Starting, Power Factor: 0.95 to 0.99, 2 Lamps, 75 deg C, 15 in L x 13 in W x 4 in H