ROBERTSON 3P10129 Fluorescent mBallast for 1 F15T12/F20T12 Linear Lamp, Preheat Start, 120Vac, 60Hz, Normal Ballast Factor, NPF, Model SP2 AM (Replaces Robertson 3M10005, SP2 /A) Equivalent to Philips Advance LC1420C; Radionic CU452, CUSP452 Save by ordering the Quik-Pak of 10 individually packaged ROBERTSON 2P10129 Offering the broadest ballast/LED Driver line available on Amazon. Go to RobertsonDirect.com for complete technical data. Take advantage of Robertson's 60 years of electronic design and quality manufacturing experience.