C-Tube is an upgraded version CFL tube replacement with LED. It has the best configuration of brightness and power efficiency. C-tubeTM is designed to replace medium bi-pin T8 and T12 fluorescent tubes. C-tubeTM fits directly into most fluorescent fixtures providing a simple upgrade to high quality LED lighting. C-tubeTM is optimized to provide light outputs comparable to fluorescent and delivers the immediate benefits of white-LED lighting;long lifetimes, no maintenance, high efficency, no mercury, no recycling, no flickering, no buzzing, instant start, cold temperature operation, and high quality light. It provides energy savings of up to 75% over fluorescent applications that require long hours with low occupancy rates such as stairwells, corridors,warehouses, and remote locations. The high quality C-tubeTM replacement tube is constructed from extruded aluminum to provide a virtually unbreakable, vandal proof lighting solution.