Linear Fluorescent Bulb Bulb Base Type Medium Bi-Pin (G13) Bulb Housing Glass Bulb Shape T8 Color Rendering Index 85 Color Temperature 3500K Lumens 2 150 lm Light Technology Fluorescent Nominal Length 3 ft Shatter-Resistant No Watts 25 W Voltage Ballast Dependent Standards TCLP Compliant ANSI Code 1002-1 Bulb Minimum Starting Temperature 32 Degrees F Bulb Start Type Preheat High Output No Overall Length 36 in Rated Life 36 000 hr Bulb Power Source Requires Separate Ballast