SunSun Lighting 4ft 18W LED T8, Full Glass Tube (3500K) 18W | 2000lm | 110-277V/60HZ 3500K (Warm White) | CRI: 80 Built-in Driver | Flicker-free | Instant On | 360 degree Listing: UL, DLC, FCC, RoHS 25,000 hour lifespan | 3-year limited warranty