Incandescent Bulb, Bulb Base Type Single Contact Bayonet (BA15s), Bulb Housing Glass, Bulb Shape S8, Bulb Finish Clear, Color Rendering Index Not Applicable, Color Temperature 2700K, Lumens 402 lm, Light Technology Incandescent, Shatter- No, Trade Number 1683, Voltage 28V AC, Watts 28.56 W, Bulb Beam Angle Not Applicable, Rated Life 500 hr, Dimmable No, For Enclosed Fixtures No, Three-Way No, Light Color White, Indoor/Outdoor Usage Indoor Only, Overall Length 2 in