LightWise LWL18T523W27 White LED 18Watts Tube with 2' T5 and 5000K Retrofit for F24T5HO 2Ft T5 Fluo. Tube,More Lux and Energy Saving. 1 2 4 5 8 12 16 20 Pack Available. (1, White) Direct Replace 2' T5 tubes from your T5 grow Lights to get over 50% light and energy saving White 2700K Color Temperature provide full spectrum same like sun shine. Long life up to 50,000 hours and cool opetation than before Fluo.system Upgrade your grow lights system w/o any extra job, just replace the tube directly Work great with Fulham and BallastWise Ballast, UL Listed and safety shipping