Advance Optanium® Electronic Fluorescent Ballast, Small Can, T8 Lamp, 32 W Lamp, 85/84 W Wattage, 120 to 277 VAC, 0.72 A, 50/60 Hz Frequency, Programmed/Rapid Start, -18 deg C Minimum Starting, Total Harmonic Distortion: 10%, Power Factor: 0.98, No Dimmable, 3 Lamps, Thermal Protection: Class P, Ballast Factor: 0.88, 70 deg C, Metal, 9.5 in L x 1.7 in W x 1.18 in H Dimensions