Sylvania Octron Curvalume T8 Fluorescent Lamp - 16 Watt - 10.5" Length - 1-5/8" Leg Spacing - 3500K Color Temperature - Rare Earth Phosphor - 82 CRI - Suitable For IS Or RS Operation - 20,000 Hours Average Rated Life - Medium Bi-Pin Base - 1,125 Lumens.