The Exo Terra Compact Top Canopy is a compact fluorescent terrarium canopy designed for use with the Exo Terra Glass Terrarium. This easy-to-install canopy accommodates compact fluorescent bulbs or low wattage incandescent bulbs. A combination of different Exo Terra Repti Glo compact fluorescent bulbs can be used to create the ideal ultraviolet/visual light ratio or a combination with an incandescent light source. DIMENSIONS (WXDXH) 45 X 20 X 9 CM 17.7 X 7.8 X 3.5 "