Incandescent Bulb, Bulb Base Type Intermediate Screw (E17), Bulb Housing Glass, Bulb Shape T7, Bulb Finish Clear, Color Rendering Index Not Applicable, Color Temperature 2800K, Lumens 108 lm, Light Technology Incandescent, Shatter-Resistant No, Trade Number 15T7N/120V, Voltage 120V AC, Watts 15 W, Bulb Beam Angle Not Applicable, Rated Life 1,000 hr, Dimmable Yes, For Enclosed Fixtures No, Three-Way No, Light Color White, Indoor/Outdoor Usage Indoor Only, Overall Length 2 1/4 in These T-shaped miniature light bulbs have an intermediate screw base, also known as an E17 base. The base has a 17mm diameter and screws into a compatible socket.T-shaped miniature light bulbs are shaped like a tube, so they are sometimes known as tubular miniature light bulbs. These miniature light bulbs are small.