The PLF65/65 65W Feit Electric CFL natural daylight bulb will produces 4550 lumens of 6500K Daylight while using only 65 watts of electricity - up to 76% less energy than an equivalent 300-watt incandescent light bulb. This non-integrated CFL quad-tube lamp comes with with a E39 mogul base(1.5" width) and has an average life of 10,000 hours / 9.1 years. Choose a dependable general purpose compact fluorescent bulb for residential or commercial applications.