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