Luxrite LR20685 (2-Pack) LU50/ED17 50-Watt HID High Pressure Sodium Light Bulb, Warm White 2100K, 4000 Lumens, E26 medium base Color/Finish: Warm White Color Temperature: 2,100K Average Lifetime: 24,00 Hours Lumens (light output): 4000 E26 medium base