... efficiency. replace T8 old tube 14w,28w,35w t8 to t5 fluorescent light Specification:14W, 21W, 28W, 35W1, Energy saving 45% ... for standard quality9, Retrofitting T8 to T5 tube, direct plugged into the existing T8 light fixture.10, No labour and no modification ... cost to the existing T8 light fixture.11, PC inflaming retarding converter lampholder 12,Installation: Mounting ...