Incandescent Bulb Bulb Base Type Glass Wedge (W3x16d) Bulb Housing Glass Bulb Shape T6-1/2 Bulb Finish Clear Color Rendering Index 100 Color Temperature 2767K Lumens 13 lm Light Technology Incandescent Shatter-Resistant No Trade Number 7443 (W21/5W) Voltage 12V AC Watts 4.2 W Bulb Beam Angle Not Applicable Rated Life 1 000 hr Dimmable No For Enclosed Fixtures No Three-Way No Indoor/Outdoor Usage Indoor Only Overall Length 1 27/32 in