Want to grow better? Go with the green house. Outsunny's spacious walk-in, lean-to greenhouse features twin-wall polycarbonate to protect plants from wind, cold, rain, UV scorching, and wild animals. Lean our greenhouse up to an existing structure such as your house, fence, shed, or garage. When you do, it will gain supplemental strength. A sliding door makes it convenient to enter, and there's an adjustable vent on top; together, they give you greater control over humidity inside.