... efficiency. replace T8 old tube 14w,28w,35w t8 to t5 fluorescent light Specification:14W, 21W, 28W, 35W1, Energy saving 45% ... of surface treatment or PC body4,With pure tri-phosphor fluorescent tube(high efficiency, longer life greater than 8000 hours,Instant ... Electronic ballast 2years warranty for standard quality9, Retrofitting T8 to T5 tube, direct plugged into the existing T8 light fixture.10 ...