Pack of 10 Radionic Octron 17-Watt T8 Magnetic Replacement Ballast - OT17HTP Replacement Ballast For Use With (1) 17 Watt FO17T9 Lamp Easy to install diagram posted on this product page Reliable Radionic Industries brand name, CUL 73XJ High Power Factor, Thermally Protected 120 Volts, Rapid Start, With Lead Wires Attached, Canned