Fulight Full-Spectrum &curren; LED Tube Light - T8 4FT 48" 20W (40W Equivalent), Daylight 5000K, F32T8, F34T12, F40T12/CW, Single-End Powered, Frosted Cover - 85/277V TRUTH + HEALTH: Clean Daylight White 5000K with 95CRI provides color-correct and most joyful lighting! Significant Enegy Saving: Roughly replaces 32-40W fluorescent, saving ~50% electricity. GREEN ECO FRIENDLY: No radio frequencies interference, No dazzling, no flickering, no UV light, no buzzing ballast, no mercury or hazardous materials Long life time: ~34 Years (+ 3-Year Warranty) Fixture Rewiring is Easy but REQUIRED: No more electronic ballast! **Installation Manual attached as the 2nd photo at the left upper corner of this poduct page!**