The Exo Terra repti glo 5.0 tropical terrarium lamp has a moderate to high UVB output, similar to that of shady environments such as rain forests and other tropical locations. Ideal for all tropical and subtropical reptiles. High UVB output and effective up to 12-inch. Provides necessary UVB rays for optimal calcium metabolism. Stimulates appetite, activity and reproductive behavior through UVA radiation. Recommended in combination with repti glo 2.0 for a higher visual light output. The linear repti glo bulbs have a higher output and divide the energy more efficiently over wider terrariums. The longer sizes can even be placed on multiple terrariums. To fit our range of fluorescent bulbs, both linear and compact, Exo Terra developed a complete line of terrarium tops and linear fluorescent bulb controllers. Almost all of these fluorescent fixtures have multiple fittings to enable a combination of different repti glo bulbs in order to simulate any micro habitat suitable for a specific species. Available in 30-watt. Measures 36-inch length. This product weight is 0.46-pound.