Eiko 15521-1 F15T8/CW Straight T8 Cool Fluorescent Tube Light Bulb, 18" Long, White Eiko 15521 - F15T8/CW Straight T8 Cool White Color Fluorescent Tube Light Bulb T8 Bulb Type, 825 lumens Light Output, G13 Base 15 watts Energy Used, Cool White Color / Finish 7,500 hours Average Lifetime 4,100K Color Temperature, 60 CRI, 18" Length