Sylvania 20668 (4-Pack) CF18DD/E/841/ECO 18-Watt Double Tube Compact Fluorescent Light Bulb, 4100K, 1150 Lumens, 82 CRI, T4 Shape, 4-Pin G24q-2 Base Color/Finish: Cool White Color Temperature: 4,100K Lumens (light output): 1150, 82 CRI Average Lifetime: 12,000 Hours G24q-2 4-Pin Base