Kunshi T8 Rotary Base LED Light Tube,4ft,18w (40w Equivalent)2000lm,4000k Neutral White 1.Low Energy Cost,Mercury Free,Internal Driver,No Strobing or Flickering,Worry-Free Warranty: 3 years of free replacement 2.T8 4 foot LED tube replacement bulb for tradition 40 Watt 4 foot T8 fluorescent tube. 3.Consumes 18 Watts of power using 300 high power 3528 SMD LEDs. 4.This tube contains no mercury and is in accordance with CE and FCC testing standards in addition to being UL classified. 5.Bulb Type: T8 48" LED tube Rotary base Power: 18W(Replace 40W fluorescent tube light.) Color Temperature:4000K(Neutral White) Beam Angle: 180 degrees Luminous Flux: 110 Lumen Per Watt Input Voltage:AC85-265V Length: 48"(120CM)