JTL 92175 DL-170 Fluorescent Soft Box Kit II with Two 85W CFL, Light Stands, Carry Case, 33" Octagon Softbox and Holder Day Light balanced color temperature: 5500K Compact and Easy set up: Fit into existing E-27 light fixtures formerly used for incandescent lamps Energy efficiency: CFLs use 20 to 33 percent of the power of equivalent incandescent lamps Luminous efficacy: The luminous efficacy of CFL sources is typically 50 to 70 lumens per input watt of electric power, versus 8 to 17 lm/W for incandescent lamps Reduced Heat: As incandescent lamps are replaced by CFLs, the heat produced due to lighting will be reduced