Sylvania 20667 (6-Pack) CF13DD/E/841/ECO 13-Watt Double Tube Compact Fluorescent Light Bulb, 4100K, 900 Lumens, T4 Shape, 82 CRI, 4-Pin G24q-1 Base Color/Finish: Cool White Color Temperature: 4,100K Lumens (light output): 900, 82 CRI Average Lifetime: 12,000 Hours G24q-1 4-Pin Base