The Feit Electric 65-Watt Daylight Standard E26 with Mogul Base adapter CFL Light Bulb is non-dimmable and will replace a 300-Watt incandescent bulb. It produces a light output of 4550 Lumens and uses up to 78% less energy than a standard incandescent light bulb. This compact fluorescent light is ideal for recessed and outdoor fixture applications. Feit Electric CFL bulbs have a relatively cool running performance, an average life of 10,000-hour/9.1-year and are FCC compliant. Choose a general purpose bulb for residential or commercial applications. *Requires internal ballasted fixture to operate.