The PowerSun UV is a high-intensity source of UVB, UVA, heat and visible light. Because the PowerSun UV is a self-ballasted bulb it can be used in any ceramic socket that is rated to handle the wattage. The PowerSun UV has nickel-plated threads to ensure that it will not corrode in humid reptile habitats. These lamps project useable UVB radiation greater distances (up to 6 feet) than conventional fluorescent tubes. This makes them ideal for large enclosures and reptiles with high UV demands.