Ushio Double Twin Tube Plug-in Compact Fluorescent lamps are energy efficient, feature a 10,000 hour average lamp life, and a low operating temperature. G23-2, GX23-2, G24d-2, and G24d-3 plug-in 2-Pin base. Triphospher coating render colors closer to nature and a coloring index of 82 in a variety of color temperatures