Plug-In CFL Bulb, Bulb Base Type 4-Pin (G24q-3), Bulb Finish Frosted, Trade Number F26DBX/835/ECO4P, Bulb Shape T4, Color Rendering Index 82, Color Temperature 3500K, Incandescent Wattage Equivalency 100 W, Lumens 1,800 lm, Bulb Housing Glass/Metal, Light Technology Fluorescent, Shatter-Resistant No, Voltage Ballast Dependent, Watts 26 W, Bulb Beam Angle Not Applicable, Three-Way No, Rough Service No, Dimmable Yes, Bulb Power Source Plug and Play, Light Color White These PL-C quad-tube plug-in light bulbs have a wedge-style base with four pins. They are compatible with electronic-ballast light fixtures with a matching socket.PL-C quad-tube plug-in light bulbs have a maximum overall length of 9 in. They have a larger diameter and provide more light than PL-T triple-tube plug-in light bulbs.