Made with unbreakable ultra-violet resistant polycarbonate and supported by a strong galvanized steel interior structure, our greenhouse carries the banner of the finest in the market. This greenhouse has wide double entry doors and more useable space for growing. Our greenhouse is long lasting and comes with a 12 year warranty.These greenhouses include a foundation frame kit, wide double doors, roof opening vent kit and the columns are designed to support all your shelving needs.