The Exo Terra Repti Glo 10.0 UVB Tube is a high-output linear bulb designed to provide essential UVB radiation for reptiles. This bulb is ideal for desert-dwelling reptiles, offering a high concentration of UVA and UVB rays that mimic natural sunlight. Proper UVB exposure is crucial for vitamin D3 synthesis, which aids in calcium absorption and prevents metabolic bone disease. The Repti Glo 10.0 is suitable for use in vivariums and terrariums, promoting healthy plant growth and providing a naturalistic environment for your reptiles. It is a 15-watt bulb and measures 46cm (18 inches) in length.