Zilla Heat & UVB Basking Fixture Heat, light and UVB in one compact fixture! Mini Halogen bulb is an energy-efficient heat source while coil bulb provides UV rays essential for reptile health Simulates the effects of a mercury vapor lamp but uses less energy and allows for a concentrated basking spot area with overlapping UVB rays Uses one Zilla Fluorescent Coil Bulb and one Mini Halogen Bulb - sold separately Great for both desert and tropical reptile environments Item Height :5 IN /Item Length :9.7 IN /Item Width :6 IN