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. The PowerSun UV has all of the benefits of our award winning ReptiSun bulbs with the added benefit of increased intensity, heat and a one year guarantee.