Linear Fluorescent Bulb Bulb Base Type Miniature Bi-Pin (G5) Bulb Housing Glass/Polycarbonate Bulb Shape T5 Color Rendering Index 85 Color Temperature 5000K Lumens 4 650 lm Light Technology Fluorescent Nominal Length 4 ft Shatter-Resistant Yes Watts 54 W Voltage Ballast Dependent Standards TCLP Compliant Bulb Minimum Starting Temperature -20 Degrees F Bulb Start Type Rapid High Output Yes Overall Length 45 1/4 in Rated Life 30 000 hr Trade Number F54T5/850/HO/ECO/CVG