When you're ready to step up to the toughest, largest plastic shelving in the industry, it's time to go with Dura-Shelf® all-plastic industrial-grade shelving systems. Our unique locking collar system lets you choose whether to build up, out or both. Our rigid high-density polyethylene panels are like nothing else you've ever seen in plastic shelving. Each panel is a stout 2-5/8" thick with a grid top that allows liquids to flow through, promotes air circulation and prevents dust build up. The entire system is chemically resistant, making it an ideal choice for HAZMAT storage or any other application, corrosive or not. Weight capacity of all products assumes even distribution of material across all panels."