Linear Fluorescent Bulb, Bulb Base Type Medium Bi-Pin (G13), Bulb Housing Glass/Metal, Bulb Shape T8, Color Rendering Index 85, Color Temperature 3500K, Lumens 2,925 lm, Light Technology Fluorescent, Nominal Length 4 ft, Shatter-Resistant No, Watts 32 W, Voltage Ballast Dependent, Standards TCLP Compliant, ANSI Code 1005-2, Bulb Minimum Starting Temperature 50 Degrees F, Bulb Start Type Rapid, High Output No, Overall Length 48 in, Rated Life 30,000 hr, Bulb Power Source Requires Separate Ballast