GE, F34CW/RS/WM/ECO, 34W, Miser, Rapid Start, T12, 4" Cool White Low Mercury Fluorescent Tube, Medium Bi-Pin Base, Nominal Length = 48", 20,000 Hours, 2650 Initial Lumens, 4100 Kelvin Color Temperature, CRI=60, TCLP Compliant, No Recycling Required.