... use solid-stated mercury, 38% less usage of glass and phosphor powder compared to T8 lamps. 5, Good Color Rendering Index >80Ra6 ... , store, house, project energy conservation improvement and so on T5 integrative system To replace T8 tube To replace T10 ,T12 tubes 14W 18W ... Comparing with 58WT8, 35WT5 will save electricity by 48%. T5 TO T8 Converter 14W 21W 28W 35W