When we tell you that the Canopia Balance Greenhouse Kits provide your plants with the optimal conditions for nurture and growth, we mean it. With two types of glazing, you get a balanced DIY greenhouse that combines the protection of the diffused twin-wall roof panels with the light transmission of the crystal-clear wall panels for ideal growing conditions. All panels are made of UV-protected polycarbonate, a virtually unbreakable high-end polymer that is uniquely suited for greenhouses.The extra-large workspace gives you plenty of room to grow an abundance of vegetables and herbs and store the tools and accessories you need. The Balance Greenhouse is also extremely accessible with wide and tall double doors and a low threshold for wheelbarrows to go in and out as well as enough room to transfer large trays of plants. The lockable door has a metal hinge that works as well in frost as it does in heat, so it never gets stuck like a sliding door. Features and Benefits Extra Large Design: