6.3 ft x 4.1 ft Outdoor Polycarbonate Lean-to Greenhouse with Black Metal FrameWant to grow better? Go with this 6. 3 ft x 4. 1 ft Outdoor Polycarbonate Lean to Greenhouse with Black Metal Frame. Our 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