Our commercial greenhouse is 100-percent commercial-grade galvanized steel frame and connectors – featuring Quick Connect assembly. Rugged triple-layer waterproof, UV protective polyethylene cover, back and door panel. Three-piece cover construction allows for easy access and maintenance of plants, vegetables and herbs. Our FloThruVent technology controls airflow from the base of the unit and the ends of the unit with lower vents and front and rear panel zipper-screened window. Ridged frame and center rail construction allows growing enthusiasts to hang their heaviest basket plants from the roof frame without sagging. This product has quality manufacturing features:. Constructed with stainless steel cable and aluminum anchor for maximum life and stability. Rust-resistant.