MaxLite 100W Bright White QuintupleTwin Tube CFL Bulb, E39 Base,MaxLite,767627358401" /> Quintuple Twin Tube bulb with a Mogul (E39) base Gives a bright white light Energy efficient replacement for a conventional 400W bulb Estimated life of 9.3 years based on 3 hours use per day Energy efficient replacement for a 250W HID bulb