The Palram - Canopia Americana is a sophisticatedly designed maintenance free greenhouse, offering the precise balance of two virtually unbreakable, advanced polycarbonate panels; twin-wall roof panels and crystal-clear side panels, along with a reinforced, rust resistant aluminum frame and galvanized steel perimeter base with a hinged, lockable double door and low-threshold for easy access. The barn shaped design is classic and offers plenty head room, the included 2 vent windows help maintain sufficient temperature and moisture levels. Start growing a bounty of vegetables and enjoy the fruits of your labor year-round with the Americana Greenhouse.