Linear Fluorescent Lamp Lamp Shape T12 Diameter 1-1/2 In. Length 24 In. Base Type Medium Bi-Pin (G13) Start Type Preheat Lamp Designation F20T12/SP35/ECO 20 Watts Lamp Tone Neutral Color Temp 3500K CRI 73 Initial Lumens 1275 Mean Lumens 1200 Average Life 9000 hr. Min Starting Temp 50 Degrees F No Shatter-Resistant ANSI Code 2015-1 Meets 2012 Lighting Legislation Energy General Purpose