This compact terrarium daylight companion light is designed for use with the Exo Terra Glass terrarium. This easy-to-install companion light is designed to use compact fluorescent bulbs or low-wattage incandescent bulbs. The various Exo Terra Repti Glo compact fluorescent bulbs can be used together (PT2226 / PT2227 / PT2228) to create the ideal UV light/visible light ratio or with an incandescent light source like the Exo Terra Sun Glo to increase the air temperature in the terrarium. Optional accessories such as Exo Terra Digital Thermometer and hygrometer and thermostat Exo Terra Thermostat and hygrostat can be installed on the lid using special installation grooves. for installation Dimensions: 60 x 9 x 20cm