Linear Fluorescent Bulb, Bulb Base Type Miniature Bi-Pin (G5), Bulb Housing Glass, Bulb Shape T5, Color Rendering Index 85, Color Temperature 3500K, Lumens 4,480 lm, Light Technology Fluorescent, Nominal Length 4 ft, Shatter-Resistant No, Watts 54 W, Voltage 120V AC, Standards TCLP Compliant, High Output Yes, Overall Length 45 1/4 in, Rated Life 40,000 hr, Bulb Power Source Requires Separate Ballast, Trade Number FP54/835/HO/ECO, Bulb Dia. 5/8 in, Dimmable Yes, Light Color White