The Arcadia D3 12% UVB is a compact light that fits into most standard 110v fixtures. Arcadia Reptile T8 D3+ lamps have a high UV-A output (30%) providing all the elements which are so vital to the welfare of the reptiles. As full-spectrum lamps, they help simulate sunlight. This provides high color rendering for enhanced viewing of your reptiles and their environment. The color temperature of 6500K replicates typical daylight conditions.