Metal Plant Trolley - Shelf ONLYMetal Plant Trolleys are perfect for use in your hydroponic or mushroom growing operations. These are professional grade trolleys that are absolutely built to last in any environment. Capable of storing and transporting a significant amount of weight, the base, posts, shelves, and all associated components are constructed of galvanized steel and are extremely corrosion resistant. The four included posts include 40 mounting positions allowing you to