T5 light fixtures use tri-phosphor powder tube and solid mecury, high efficiency, long lifetime. SDT1-T5 Electrical light fixtures(New,28w) Features;1,Material: aluminum body with reflector.2,Adopt high quality ballast, comply with 3C,TUV-CE standard,3.High power factor (PF larger than 99%), low THD less than 10%.4,No noise, no lficker, low work temperature, low power consumption,5, Long lifetime ...