Keystone Technologies, KTEB-213-UV-RS-DW-KIT, Dual Wire Case Ballast, 13 W Lamp, 120 to 270 V AC, 50 to 60 Hz Frequency, Rapid Start, -18 deg C Minimum Starting, 2 Lamps, Thermal Protection: Class P, 75 deg C, Steel, 5 in L x 2.40 in W x 1.00 in H Dimensions