Luxrite LR22322 (4-Pack) CF23 23-Watt CFL T2 Spiral Bulb, Equivalent To 100W Incandescent, Cool Light 4100K, 1600 Lumens, GU24 Bi-Pin Base Luxrite's 23-Watt Spiral Light looks stunning in any home fixture for general lighting. Simple Twist and Lock base Luxrite 23-Watt Spiral Light replaces your standard 100W bulb and saves you energy. Color/Finish: Cool Light, Color Temperature: 4,100K, Average Lifetime: 12000 hours Lumens (light output): 1600, GU24 Bi-Pin Base