All shelves can be cleaned in a fraction of the time as wire. Shelves are available in a variety of sizes and come in a solid mat or grid mat. Metromax 4 Convenience Pak Is Available In Three Sizes And Is Easily Assembled Without Tools In Just Minutes All Polymer Cons Shelving Unit Shelving The Unit MetroMax Q Starter Add-On Units 21 Deep. Metromax i polymer shelving . Shelf mats and posts are all-polymer and provide corrosion-proof performance. The MetroMax 4 line is comprised entirely of polymer. The shelves with their removable polymer mats are easy to clean while the smooth flat surfaces protect packaged shelf contents from unwanted rips tears or damage. MetroMax Q Starter Add. This Metro X366GX3 MetroMax i polymer starter unit features 4 63 tall posts and 4 18 x 60 grid shelves built from a strong polymer which is backed by a lifetime warranty against all rust and corrosion and is integrated. All shelves hold as much weight as wire shelves but also offer protective po