... Ceiling is a lighting ceiling which consist of light source, optic fiber, crystal and to set up ... fiber: fiber diameter can be selected*End fittings *. Light source: 45W,75W.75WDMX, 100W,100WDMX, 150W,150WDMX ... ,250W,250WDMX*. 150W OSRAM light source a. Model: R-150WDMX b. Voltage: AC110V ... with silicone sealant. Step4.Insert the plug into the power socket. It is all completed.