Leviton produces lamp holders for virtually every light source equipped with incandescent, fluorescent, or CFL lamps. Lamp-holders include incandescent medium base, and specialty sizes and fluorescent lamp holders, in addition to a large line of porcelain lamp holders including pulse-rated mogul-base products, and an extensive selection of devices for high-intensity lamps. Medium Base One-Piece Glazed Porcelain Outlet Box Mount Incandescent Lampholder, Pull Chain, Single Circuit, Side Wired, 15A 125V Outlet Non-Grounding, White