GE, 13W, F13BX/835/ECO, Plug In Biax 2 Pin Compact Fluorescent Replacement Lamp, GX23 Base, Nominal Length = 7", 10,000 Hours, 825 Lumens, 3500 Kelvin Color Temperature, CRI=82, Minimum Start Temperature = 32 Degrees Fahrenheit, Ecolux, TCLP Compliant, Energy Star Rated, Boxed.