... THD<15% Power:8w,14w,21w,28w,35w Installation:Ceiling mounting, series connection 1)T5 Batten fixture with PC ... Cover(Aluminum material) 2)White coated body 3)Power:8w,14w,21w,28w ... 0.95,THD<30%4.Use tri-phosphor powder fluorescent lamp,more brightness,high efficiency5.No noise,no flicker, ... shopping mall,refrigeratory,show case,hotel,office etc T5 retrofit fixture