LED T8 48 Inch 3500K Direct Wire Tube 18.5W, 2600 lumens DirectDrive 110-277V Glass tube, with Integrated Ballast. Rewiring of existing fixture is necessary. Follow MFG Instructions. 1 live end feed. Must use non shunted sockets. 50,000 hour rated. -20 to 45 Degree Rated. ETL Approved. This lamp has a shatterproof coating on the glass tube making is safe for food service applciations. Ballast must be bypassed and power run directly to 1 end of the lamp with non shunted sockets only. Label marking that the fixture has been retrofitted must be affixed to the luminaire.