... 3.Warm start 4.25000hrs,2.5years warranty t8 to t5 adapter with reflector Specification:14W, 21W, 28W, 35W1, Energy saving ... 90Lm/w to 110Lm/w , better brightness.7, With reflector, the light efficiency can increase 17%~20%8, Electronic ballast 2years warranty ... for standard quality9, Retrofitting T8 to T5 ...