... up to 15000 hours and more 50% power saving.4, No need starter, directly connected.5,Low ... in T8 tube?1, High energy saving up to 50% compared with common T8 lamp tube.2, More brightness, ... ,hospital,hotel,home,etc. Economic returns comparision.(Saving power is saving your money) Our T5 in T8 Tube ... 302.40X12=3628.80 degree. Finally:Annual electric power saving(degree): 3628.80-1900.80=1728.00 degree. ...