Plastic Bulk Shelving & Storage Largest all-purpose industrial-grade shelving system in the industry. Our unique locking collar system lets you choose whether to build up, out our both. Our rigid high-density polyethylene panels are a stout 2-5/8" thick with a grid top that allows liquids to flow through, promotes air circulation and prevents dust build up. Optional drip trays available for containment applications, contact factory. The entire system is chemically resistant, making it an ideal choice for HAZMAT storage or any other applications, corrosive or not. Please Select Correct Option