Hotenda Standard T8 LED Tube High Brightness 4ft 18w Ra80 2200lm (1-Pack White) 120LM/W Ultra Bright: EPISTAR Chip ,High efficient output, dual-ended power, High-grade PC cover with nice light transmittance (&gt;95%), 2200 lumens ultrahigh brightness 0 light decay(@5000h): Use the high quality aluminum PCB for LEDs better heat dissipation,Use the most mature international well-known LED SMD2835 as the light source, which can ensure the led tube brightness and long lifetime, also can reduce the light decay CRI&gt;85: High color rendering of light source to reproduce the color is better.No flickering ,no startup delay, also energy saving more than 60% than conventional lamp Easy Installation: Direct replacement of fluorescent 40w T8 tube,No ballast required,wide voltage AC85-265V and constant current design 5Years Waranty: 35000 hours long life.