GE 93295 - 400 Watt - ED18 - ConstantColor Chromafit - Metal Halide Conversion Lamp - For Use With 400 Watt High Pressure Sodium Ballasts - Unprotected Arc Tube - 3000K - M169/S51 - Universal Burn - CMH400/U/830/R Color/Finish: Clear Color Temperature: 3,000K Average Lifetime: 20000 hours Lumens (light output): 41000 CRI: 80