Sylvania 20871 (12-Pack) CF42DT/E/IN/835/ECO 42-Watt Triple Tube Compact Fluorescent Light Bulb, 3500K, 3200 Lumens, 82 CRI, T4 Shape, 4-Pin GX24-4 Base Color/Finish: Natural White Color Temperature: 3,500K Lumens (light output): 3200, 82 CRI Average Lifetime: 12,000 Hours 4-Pin GX24q-4 Base