This Growing Rack is a great alternative to a full size greenhouse, perfect for apartment balconies and small backyards! Gain more growing time with this easy to use gardening tool!These attractive racks can be used in your greenhouse or on a balcony where space is limited. Provides ample growing space in a compact tower. Its removable, UV-treated plastic cover protects young seedlings and retains moist air early in the season, with twin zippers that provide easy access from either side. When plants are mature, remove the cover for an instant display. Each shelf has two removable halves to customize the rack for taller plants, and the open grid design won't hamper plants that grow tall quickly. Plastic and steel tubing. Requires some assembly; no tools needed.