This Hexagon greenhouse is designed to appeal to the professional gardener or for those wanting an outdoor structure that can also be used as an outdoor room. It is equipped with Super Strong Aluminum Connectors (2.5MM thick) and Exclusive Ultra Heavy Duty Box Section Aluminum Profiles (65X65MM) with our sophisticated FULL aluminum bar-capping glazing system-NO SILICON REQUIRED! Polycarbonate sheet (8-10MM) or tempered glass (4MM) can be served for this new model greenhouse.The panels are retained neatly with a substantial aluminum external gasket and the edges of the polycarbonate are completely concealed. What's more, all the bolts and nuts are invisible in this model. Thus, this greenhouse looks extremely neat, elegant and top grade. It can be a great solution for an outdoor leisure area when your house space is limited. This is certainly one of the best and most versatile greenhouses we offer.