Formerly LumaPro.

U-Bend Fluorescent Bulb, Trade Number F31T8/835/U3, Bulb Housing Not Applicable, Bulb Shape T8, Color Temperature 3500K, Lumens 2,700 lm, Shatter-Resistant No, Bulb Bend Radius 1 5/8 in, Watts 31 W, Bulb Base Type Medium Bi-Pin (G13), Color Rendering Index 82, Dimmable No, Light Technology Fluorescent, Overall Length 22 1/2 in, Bulb Minimum Starting Temperature 14 Degrees F, Bulb Start Type Instant or Rapid, Rated Life 25,000 hr, Light Color White, Bulb Dia. 1 1/8 in