Linear Fluorescent Bulb, Bulb Base Type Miniature Bi-Pin (G5), Bulb Housing Glass, Bulb Shape T5, Color Rendering Index 85, Color Temperature 3500K, Lumens 3,500 lm, Light Technology Fluorescent, Nominal Length 3 ft, Shatter-Resistant No, Watts 38 W, Amps 0.325 A, Bulb Start Type Preheat, High Output Yes, Overall Length 33 3/8 in, Rated Life 30,000 hr, Bulb Power Source Requires Separate Ballast, Trade Number F39T5/835/HO/ALTO, Dimmable Yes, Light Color White