6 Pack of Eiko F13T5/WW 13W Warm White 3000K T-5 G5 Base Lamp Bulb, 6 Pack 13 Watts - 3000K Color Temperature Bulb Base : G5 Bulb Shape : F13T5 Linear Fluorescent Average Life (Hours) : 7,500 Length (In.) : 20.87 - Tube Diameter (In.) : 0.63