Linear Fluorescent Bulb Bulb Base Type Medium Bi-Pin (G13) Bulb Housing Glass/Metal Bulb Shape T12 Color Rendering Index 75 Color Temperature 6500K Lumens 1 025 lm Light Technology Fluorescent Nominal Length 2 ft Shatter-Resistant No Watts 20 W Voltage 120V AC Standards TCLP Compliant ANSI Code 2015-1 Bulb Minimum Starting Temperature 50 Degrees F Bulb Start Type Rapid High Output No Overall Length 24 in Rated Life 9 000 hr Bulb Power Source Requires Separate Ballast