Linear Fluorescent Lamp Lamp Shape T10 Diameter 1-1/4 In. Length 72 In. Base Type Recessed Double Contact (R17d) Start Type Rapid Lamp Designation F72T10/CW 160 Watts Lamp Tone Cool Color Temp 4100K CRI 60 Initial Lumens 9700 Mean Lumens 1031 Average Life 9000 hr. Min Starting Temp -20 Degrees F No Shatter-Resistant Meets 2012 Lighting Legislation Energy General Purpose