Luxrite LR20665 MH175/U/ED28 175-Watt HID Metal Halide Light Bulb, Cool White 2100K, 14000 Lumens, E39 mogul base, 1-Pack Color/Finish: Cool White Color Temperature: 4,000K Average Lifetime: 10,000 Hours Lumens (light output): 14000 E39 mogul base