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