Incandescent Bulb, Bulb Base Type Glass Wedge (W2.1x9.5d), Bulb Housing Glass, Bulb Shape T3-1/4, Bulb Finish Clear, Color Rendering Index Not Applicable, Color Temperature 2400K, Lumens 8 lm, Light Technology Incandescent, Shatter- No, Trade Number 656, Voltage 28V AC, Watts 1.68 W, Bulb Beam Angle Not Applicable, Rated Life 2,500 hr, Dimmable No, For Enclosed Fixtures No, Three-Way No, Light Color White, Indoor/Outdoor Usage Indoor Only, Overall Length 1 1/16 in