Sylvania QUICKTRONIC® Electronic Ballast, Series: QTP, Metal Halide Lamp, 100 W Lamp, 110 W, 120/277 VAC, 0.96/0.41 A, 50/60 Hz, Pulse Start, -22 deg F Minimum Starting, Total Harmonic Distortion: <10%, Power Factor: >0.98, 1 Lamp, Ballast Factor: 1, 80 deg C, Surface Mount, 5 in L x 3.4 in W x 1.4 in H