GE LU70/MED/LTP. It's a 70 watt, CL glass ED17 High Pressure Sodium with a medium base. The bulb provides 6400 lumens and has a color temperature: 1900 Kelvins. With a CRI: 22, and an MOL: 5.43. The bulb is non-dimmable, with a rated life of 24000 hours. Item Notes: For use with S62 ballasts.