Linear Fluorescent Bulb Bulb Base Type Medium Bi-Pin (G13) Bulb Housing Glass Bulb Shape T12 Color Rendering Index 88 Color Temperature 3500K Lumens 2 550 lm Light Technology Fluorescent Nominal Length 4 ft Shatter-Resistant Yes Watts 40 W Voltage Ballast Dependent Standards NSF Non-Food Zone NSF Splash Zone RoHS Compliant ULEPH Bulb Start Type Rapid High Output No Overall Length 48 in Rated Life 24 000 hr Maximum Operating Temperature 150 Degrees F