Sylvania Octron Curvalume T8 Fluorescent Lamp - 16 Watt - 10.5" Length - 1-5/8" Leg Spacing - 4100K Color Temperature - Rare Earth Phosphor - 82 CRI - Suitable For IS Or RS Operation - Medium Bi-Pin Base - 20,000 Hours Average Rated Life - 1,125 Lumens.