Our enclosures have a unique design in terrarium construction. Its rounded viewing area gives an open look that is appealing and different than a rectangular tank. Instead of glass it is constructed of polycarbonate and high impact ABS plastic. Vents are molded into the bottom and top of the tank so that heat generated by the light draws air out of the tank from the top while pulling new air inside the tank from the bottom. This air exchange keeps the tank from developing a dead air space inside and reduces condensation in highly humid vivariums.