3-Tier Wooden Greenhouse with Polycarbonate Panels, Shelves & Cold Frame3 Tier Wooden Greenhouse Plant Storage Shelf with Cold Frame This compact wooden greenhouse is crafted from fir wood and UV protected polycarbonate panels. It features a top access opening and front double doors for easy entry, helping you reach plants without removing the entire cover. Designed to extend the growing season, it protects young plants from frost while letting in ample light. The UV proof polycarbonate walls are paired with a flip top