This CFL with a mini base fits into candelabra sockets typically found in chandeliers. At 3 watts, it delivers around 135 lumens of light and uses 85% less energy than the conventional 20 watt bulb it replaces. It has instant-on flicker-free technology for 6,000 hours or 5 years of average lifetime. Perfect for low lighting needs. Not dimmable. Every little bit saved is a bit better for the environment. 1.5" x 4.5".