GE, F26DBX/841/ECO-LT, CFL 26w, Plug In 2 Pin Double Biax Compact Fluorescent Replacement Bulb, G24d-3 Base, Nominal Length = 6.8", 10,000 Hour, 1630 Lumens, 4100 Kelvin Color Temperature, CRI=82, Minimum Start Temperature = 16 Degrees Fahrenheit, TCLP Compliant, Energy Star Rated.