Luxrite LR20660 (2-Pack) MH175/U/ED17 175-Watt HID Metal Halide Light Bulb, Cool White 2100K, 14000 Lumens, E26 medium base Color/Finish: Cool White Color Temperature: 4,000K Average Lifetime: 12,000 Hours Lumens (light output): 14000 E26 medium base