T5 batten,use tri-phosphor powder tube and solid mecury,high efficiency, ... *28w,1*35w,2*14w,2*28w,2*35w T5 batten Power: HE series:14w,21w,28w,35w HO series:24w ... (PF>99%),low THD(<10%) 4.Use tri-phosphor powder fluorescent lamp,more brightness,high efficiency 5.No noise,no flicker ...