This Fulham Pony electronic fluorescent ballast
is engineered to start and provide the appropriate current to one twin tube
7-watt, 9-watt or 11-watt bulb, one 13-watt quad tube or one 13-watt triple
tube lamp. This rapid start compact fluorescent lighting (CFL) ballast will
operate a lamp at 120 input volts with an energy-saving 0.974-1.550 ballast
factor. Order yours by the 50-count case from Warehouse-Lighting.com. The
manufacturer includes a three-year warranty for these ballasts.