Linear Fluorescent Bulb Bulb Base Type Recessed Double Contact (R17d) Bulb Housing Glass/Metal Bulb Shape T12 Color Rendering Index 75 Color Temperature 6500K Lumens 6 500 lm Light Technology Fluorescent Nominal Length 7 ft Shatter-Resistant No Watts 100 W Voltage Ballast Dependent Standards Meets 2012 Lighting Legislation Energy Standards Bulb Minimum Starting Temperature -20 Degrees F Bulb Start Type Rapid High Output Yes Overall Length 84 in Rated Life 12 000 hr