(4 Pack) Exo Terra Repti-Glo 10.0 Compact Fluorescent Desert Terrarium Lamp, 26 Watt Pack of 4 Exo Terra Repti-Glo 10.0 Compact Fluorescent Desert Terrarium Lamp, 26-Watt Ideal for all desert dwelling reptiles, Helps simulate environment of a natural desert Ultra High UVB output, effective up to 20" Recommended for use with screened terrariums and terrariums with dense screen covers; Combine with Repti-Glo 2.0 for a higher visual light output Provides necessary UVB rays for optimal calcium metabolism