Eiko 81185 - SP105/41/MOG - 105 Watt Spiral Compact Fluorescent, 4100K, Mogul Base 120 Voltage Rating, 105 Watts Medium Screw (E39) Base 11.26"/286mm MOL, 4.02"/102mm MOD 4.8mg Mercury Content, Amalgam HG Form 7000 Approx Initial Lumens, 10000 Rated Life