Easy and fast to assemble, the Miracle-Gro® Greenhouse features a sturdy carbon steel frame that connects with nuts and bolts. It also includes a 1-piece triple-layer ripstop cover made of Luminate Light Diffusion Fabric, which is UV treated and blocks harmful UVA and UVB rays. The translucent fabric shelters your plants from the harsh weather while it diffuses sunlight and prevents burning. The Miracle-Gro® Greenhouse is the perfect size for the backyard or the deck.