Key Specifications: *Watt: 14W/21W/28W/35W/24W/39W/49W/54W/80W *Bulb Type: T5 *Base: G5 *Color Temperature: 6400K/4000K/2700K *With its tube diameter 16mm, which just 60% of standard T8 tubes, the lamp save more material. *Shorter tube ensures more accurate lighting control. *The optimal operating temperature has been increased to 35C, which conform to actual lighting environment. *High lumen maintenance performance. *High color rendering index. *Match with quality electronic ballast, suitable for ambient temperature form 15C to 50C. *Adopt low mercury the environmental protection technology. *Match freely with various lighting fixtures to produce optimal lighting effect. *Compared with other same length tubes, T5 high output fluorescent tubes offer stronger lumen output. *Applicable for office, supermarket, hospital, industrial lighting and other places which require compact, higher efficiency, energy saving fluorescent lighting system. *CE approved.