ROBERTSON 3M10615 SP258 /G mBALLAST, NPF, 120Vac., 60Hz, (1) F25T12 Offering the broadest ballast/LED Driver line available on Amazon. Case Style 2X Take advantage of Robertson's 60 years of electronic design and quality manufacturing experience. Commerical grade. Two year warranty. Go to RobertsonDirect.com for complete technical data.