This walk-in greenhouse features a polyethylene cover plate, which protects the plants from UV burns while allowing 85% of the nourishing sunlight to pass uninterrupted, and the cover can be easily attached to the frame with the included tether ball and double-sided tape for good overall stability. Compact wall design with shelves to provide plenty of space for plants, galvanized steel frames to help prevent chipping and spalling, and ground piles to keep the structure stable. The zipper doors of the plant greenhouse can be fully opened for the convenience of your plants or tools, and the Windows have a built-in screen to control the heat and light entering the greenhouse.