t5 electronic ballast 54w 1.Power:14w,21w,28w,35w,54w 2.PF>98%,THD<10% 3.30000hrs, three years ... warranty 4.Complied with TUV t5 ... electronic ballast 54w electronic ballast Power: 14w,28w,35w,54w,2*14w,2*28w,2*35w ... 4.electronic ballast Comply with 3C,TUV-CE standard t5 electronic ballast 54w