5 individual enclosures. Each consists of a light, all regulated with one switch, and also substrate heating unit which are individually managed. 6 vents in each room. Each room is 23"(w) x 23"(d) x 16"(h). Then whole container is 27.5 x 27.5 x 88". This is consisting of the heater switches on one side and the light switch on the back. It is is outstanding problem. Perfect for showcasing your reptiles!