Linear Fluorescent Bulb Bulb Base Type Medium Bi-Pin (G13) Bulb Housing Glass Bulb Shape T8 Color Rendering Index 90 Color Temperature 5000K Lumens 2 600 lm Light Technology Fluorescent Nominal Length 4 ft Shatter-Resistant Yes Watts 32 W Voltage Ballast Dependent Standards Meets 2012 Lighting Legislation Energy Standards Bulb Minimum Starting Temperature -20 Degrees F Bulb Start Type Instant High Output No Overall Length 48 in Rated Life 36 000 hr Trade Number F32T8/TL950/Alto