Hybrid T8 4ft LED Tube/Bulb - Glass 18W 2400 Lumens 5000K Clear, Single End/Double End Power - Ballast Compatible or Bypass (Check Compatibility List)The 4ft. LED tube glass of 18W and color temperature 5000K is available as a clear tube and with a hybrid ballast option. With a CRI of >80, this LED tube can deliver lumens up to 2400. It is an excellent substitute for T8, T10 & T12 fluorescent tubes. This 18W can safely and easily replace the fluorescent tube of 65W and bring an energy savings of 47W. Thus, a lower utility bill for you every month. These 18W LED tubes are housed in rugged die cast