The Hi-Tech Lamps part number FT55DL/5600 is a 55 watt (55W) Studioline?? fluorescent lamp made by Osram. This lamp has a T5 bulb with a 2G11 base. The average rated lifetime of this lamp is 8000 hours, with an initial light output of 3800 lumens at a color temperature of 5600K. This lamp is also known as Osram STUDIOLINE 55W/5600 and 20608.