GE Ecolux® Biax® Compact Fluorescent Lamp, Plug-In, F13BX/841/ECO Designation, 13 W Wattage, 120 VAC, 0.285 A, Fluorescent Lamp, GX23 Lamp Base, T4 Shape, 825 Lumens Lumens, 10000 hr Average Life, Cool White, 82 CRI, 4100 K Color Temperature, Pre-Heat Start, 7.3 in L Dimensions