High efficiency and energy saving with built in ultra quiet inductive ballast or high efficiency electronic ... Electronic ballast--four configuration for choice: A) IC Standard with chip, PF≥0.99, THD<15%, life time is ... 45% than traditional T8 , T10 tube.2,Good quality with competitive price;3, Instant start, ,no noise, low work ... and so on T5 wall lamp fixtures built in EB 6w/8w/13w/14w/21w/28w/35w