Linear Fluorescent Bulb Bulb Base Type Medium Bi-Pin (G13) Bulb Housing Glass Bulb Shape T8 Color Rendering Index 85 Color Temperature 4100K Lumens 2 725 lm Light Technology Fluorescent Nominal Length 4 ft Shatter-Resistant Yes Watts 28 W Voltage Ballast Dependent Standards NSF Non-Food Zone NSF Splash Zone RoHS Compliant ULEPH Bulb Minimum Starting Temperature -20 Degrees F Bulb Start Type Instant High Output No Overall Length 48 in Rated Life 44 000 hr