The Palram - Canopia Mythos greenhouse kit provides the perfect growing environment for plants. The Mythos wall and roof panels are made of a nearly unbreakable polymer called polycarbonate that has the light transmission benefits of glass, but is lighter, stronger, and safer. The double walls diffuse intense sunlight that can stress plants and provide twice the heat retention of single panels for a more stable growing environment. The Mythos frame is made of rust-resistant aluminum mounted on a heavy-duty galvanized steel base for structural support. Other features include an integrated rain gutter to disperse the rainwater, and a roof vent and lockable hinged door with a magnetic catch to keep the air flowing and help control temperature and humidity. Palram - Canopia has the only DIY greenhouses on the market with a sliding panel structure, which creates better insulation, stronger resistance to wind and is easier to assemble. Prolong your growing season by starting from seed in the early spring and extend your plant growth beyond the first fall frost with this backyard greenhouse. With its easy assembly, durable materials, and effective features, the Palram - Canopia Mythos greenhouse is the natural choice.