GE Current HID Replacement Ballast Kit, Coil and Core, HID Metal Halide Lamp, 1080 W Wattage, 120/208/240/277/480 VAC, 9.15/5.25/4.55/3.95/2.3 A, 60 Hz Frequency, Probe Start, -30 deg C Minimum Starting, Power Factor: 0.9, No Dimmable, 1 Lamp, Ballast Factor: Normal, Adjustable Bracket Mounting, 4.25 in H x 5.05 in D Dimensions