Eiko 81184 - SP105/41/MED - 105 Watt Spiral Compact Fluorescent Light Bulb, 4100K, Medium Base 120 Voltage Rating, 105 Watts Medium Screw (E26) Base 10.75"/273mm MOL, 4.02"/102mm MOD 4.8mg Mercury Content, Amalgam HG Form 7000 Approx Initial Lumens, 10000 Rated Life