Advance OPTANIUM Electronic Fluorescent Ballast, T8 Lamp, 32 W Lamp, 113/110 W Wattage, 120 to 277 VAC, 0.4 to 0.94 A, 50/60 Hz Frequency, Programmed Start, 10 deg C Minimum Starting, Total Harmonic Distortion: 10 %, Power Factor: 0.98, 3 Lamps, Ballast Factor: 1.18, 70 deg C, Metal, 9.5 in L x 1.7 in W x 1.18 in H Dimensions