Animals that live under a canopy or in rock crevices usually don't get as much direct sunlight, therefore, their UVB needs are lower. Zilla Canopy UVB/UVA Bulbs provide lower intensity UVB and UVA for these specific animals. Great for reptiles and amphibians that require low intensity levels|Provides UVA and UVB for calcium absorption|Fits in a standard 8.5" or larger dome