The Big Apple Medium Vertical Stackable Cage, Lighting, Heating & Temperature Control Kit is the perfect combination to provide proper heating and superior levels of UVA and UVB light to your reptiles. The innovative stackable cage system allows your habitat to grow with your reptiles. The Mega-Ray 70 Watt Mercury Vapor Reptile Bulb is the smallest and best-in-class self-ballasted light. The IntelliTemp Heat Mat's superior design creates maximum dependability and temperature consistency. The BAH-1000 Thermostat is so technologically advanced it is considered one of the most accurate and reliable thermostats available in the pet industry. House one reptile or stack and lock multiple enclosures for the ultimate modular reptile cage system.