Commonly used as a modeling lamp, this 40W and 120V 40S11N/BL Incandescent Lamp from Sylvania / Osram is available here as a replacement or spare. The incandescent lamp features a clear S11 bulb along with an intermediate E17 base. The bulb has a CRI of 100 and is rated to output approximately 44 lumens. Additionally, it has a color temperature of 2850K and an average life of about 500 hours.