5 individual rooms. Each contains a light, all managed with one switch, and also substrate heater which are individually controlled. 6 vents in each enclosure. Each room is 23"(w) x 23"(d) x 16"(h). Whole storage tank is 27.5 x 27.5 x 88". This is consisting of the heating system activates one side and also the light turn on the back. It is is exceptional condition. Perfect for showcasing your reptiles!