... Aluminum Heat Sink + transparent PC mask T8 LED tube 1.2m 18W SMD3528 1780LM isolated power supply Efficiency ComparisonLED Tube8W10W12W15W18W20WFluorescent ... evenly.4. Save Energy and environmental Protection,good for health.5. Easy to install and easy ... Department store, Hotel, Home, Office,Underground parking, School, Factory, Light box,Other public places,Etc. Pictures: LED Tube Wiring Diagram :