Portable mini greenhouse creates a protected 39 x 20 x 59 in growing space sized for balconies, patios, and other small areas so you can start or extend your garden in limited square footage. A PE grid cover surrounds plants while allowing ample sunlight to reach them and helps maintain a stable environment. The heavy-duty electroplated metal frame supports the cover for season-to-season use. Overlong cover edges can be pressed down or weighted to help stabilize the structure. A large 57 x 32 in roll-up zippered door opens wide for easy access to watering, tending, and harvesting.