Sunlite 30342-SU F28T5/850 28W Fluorescent T5 Bulb, Mini Bi-Pin, Super White

30342-su f28t5/850 28w fluorescent t5 bulb, mini bi-pin, super white the fluorescent 28 watt 5,000k super white t5 high performance straight tube features a mini bi-pin base, provides a light output of 2,500 lumens at a color rendering index (cri) of 82 and can last an average of 20,000 hours. these lamp utilize a single and double coat phosphor system. series lamps have an increased cri due to the use of tri-phosphors (rare earth phosphors). tri-phosphors also increase the lumens/watt output of the lamp. these series lamps offer superior quality of lighting, increased energy efficiencies, and extend life.