Lamp, Shatter-Resistant, CFL, CFL-T 42W/841 (PK x 12), 42 Watts, 120 Volts, 2850 Initial Lumens, 4100 K, 82 CRI, Electronic Ballast, Instant Start Type, CFL Twist Shape, 2.4 IN Dia, 5.7 IN Long, Twist Bulb, Medium (E26) Base, 12000 Avg Life Hrs, 841 Color, Silicone Coating