Sylvania 20403 Single Tube Compact Fluorescent Bulb, 13 W, T12 Lamp, GX23 | Saves energy costs by replacing incandescent bulbs with fluorescent equivalents. Use for down lights, wall sconed, exit signs and task lighting. Ecologic, 10,000 hrs average life. 82 CRI (Color Rendering Index). 120 V, carded.