... ≥82,life time greater than 10000hrs ModelColour TemperatuareLuminous Flux(Lm)T5 HE 8W2700K/4100K/6400K(warm white/cool white/daylight)480 ... .5, Good Color Rendering Index6,Pre-heat function: make the T5 tube long life time7, No flicker, near to natural light ... office,store,house, project energy conservation improvement and so on T5 integrative systemTo replace T8 tubeTo replace T10,T12 tubes14W -2ft18W ...