ROBERTSON 3P10130 Fluorescent mBallast for 1 F25T12 Linear Lamp, Preheat Start, 120Vac, 60Hz, Normal Ballast Factor, NPF, Model SP258 AM (Replaces Robertson 3M10007, SP258 /A) Equivalent to Philips Advance LC25TP Save by ordering the Quik-Pak of 10 individually packaged ROBERTSON 2P10130 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.