... D type AL housing 3, LED constant current driver 4, 1.0mm Aluminum PCB LED tube 1.2m TDL-YG2004-18/G13Type ... 3 times tube life3, LED constant current driver can improvelight efficiay and productReliability4, 18W LED tube can replace traditional 36W tube.5, 60 ... % energy saving compared with traditional T8 tube6, No Mercury, ...