Exo Terra Repti Glo 10.0 Desert Terrarium Lamp, 25-Watt, 30-Inch Repti glo 10.0 desert terrarium lamp has a very high UVB output similar to that associated with desert environments Therefore desert reptiles are more exposed to UV radiation than any other type of reptile This bulb can also be used on screened terrariums or terrariums with dense screen covers to ensure UVB penetration This product weight is 0.4-pound Measures 30-inch length