ROBERTSON 3P10031 Fluorescent mBallast for 1 FC6T9 or FC8T9 Circline Lamp Rapid Start, 120Vac, 60Hz, Normal Ballast Factor, NPF, Model RN22PWS /B Magnetic ballast for FC6T9 or FC8T9 Circular Lamps with socket Class P, Type 1, Type HL UL and cUL listed No PCB's Go to RobertsonDirect.com for complete technical data.