... the replacing procedures are the same as replacing a normal tube. Will much save the labor cost of Energysaving Lighting ... eyes from 50Hz flickering of light caused by magnetic ballasts.8. Noises free.9. Reduce heat during operation. It indirectly ... save electricity by 48% 6ft',8ft',2x21w,2x28w ,T8 to T5 Adaptor/Adapter Linear Convertor/Converter T5 fluorescent lighting lampCE,ROHS,SAA,TUV ...