Upgraded T5 HO UVB Reptile Light Fixture 1. Upgraded ballast for rapid start and light fixture protection, if the bulb burns out, the lamp fixture will not be damaged. 2. Installing the light fixture with extendable bracket, keep the lamps are placed more stable without damaging the mesh cover, and also be used on vivariums without cover. High Output UVB Reptile Light Comes with 5.0 UVB T5 tube bulb, professional designed for tropical reptiles. Equipped with high-specular reflective sheet can significantly improve the output efficiency of light source, help reptiles better absorb calcium, and ensure their healthy growth.