ROBERTSON 3M10464 SS20604P /C mBallast, NPF, 120Vac., 60Hz, (1) GPH450 V2 Offering the broadest ballast/LED Driver line available on Amazon. Selections to match any lighting application. 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.