Linear Fluorescent Bulb Bulb Base Type Recessed Double Contact (R17d) Bulb Housing Glass/Metal Bulb Shape T12 Color Rendering Index 60 Color Temperature 4100K Lumens 6 350 lm Light Technology Fluorescent Nominal Length 6 ft Shatter-Resistant No Watts 85 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 72 in Rated Life 12 000 hr