Linear Fluorescent Bulb, Bulb Base Type Recessed Double Contact (R17d), Bulb Shape T12, Color Rendering Index 75, Color Temperature 6500K, Lumens 4,130 lm, Light Technology Fluorescent, Nominal Length 5 3/8 ft, Shatter-Resistant No, Watts 80 W, Voltage Ballast Dependent, Standards Meets 2012 Lighting Legislation Energy Standards, Bulb Minimum Starting Temperature -20 Degrees F, Bulb Start Type Rapid, High Output Yes, Overall Length 64 in, Rated Life 12,000 hr, Trade Number F64T12/D/WM/HO