Crystal Clear Virtually Unbreakable Polycarbonate Side Panels 4mm Twin-Wall Polycarbonate Roof Panels Strong Rust Resistant Aluminium Frame Galvanized Steel Base Vent & 4 Gutters Included Uniform Profiles for all Positions Simplifies Assembly Process Sliding Panels assembly System; No Glazing Clips are Needed Sturdy Aluminum Frame for Long Lasting Durability Magnetic Door Catch Hinged Door can be Assembled from Right or Left Side Withstand Winds of up to 75 Miles per Hour