Linear Fluorescent Bulb, Bulb Base Type Medium Bi-Pin (G13), Bulb Shape T8, Color Rendering Index 85, Color Temperature 3000K, Lumens 2,515 lm, Light Technology Fluorescent, Nominal Length 4 ft, Shatter-Resistant No, Watts 28 W, Voltage Ballast Dependent, Standards Meets 2012 Lighting Legislation Energy Standards, Bulb Minimum Starting Temperature 60 Degrees F, Bulb Start Type Instant, High Output No, Overall Length 47 3/4 in, Rated Life 50,000 hr, Trade Number F28T8/XL/SPX30/ECO, Bulb Dia. 1 in