LEDwholesalers UL 20-Watt 4-Foot T8 T12 LED Tube Light with SMD2835, 40W Fluorescent Tube Replacement, Warm White, 1923WW UL-listed LED replacement for 48" fluorescent tube High efficiency, 20W consumption, comparable to 40W traditional tube No flickering or buzzing, super bright, energy efficient, long lasting No hazardous material like mercury or UV Long life of ~35,000 hours; 1-year warranty