48" Grid Top Dunnage-Rack provides heavy-duty stability and durability for the storage of large bulk items. Made of high-density polyethylene (HDPE), Dunnage-Rack features easy no-tool assembly. It will not rust, is chemically resistant, and is ideal for HAZMAT storage or maintenance rooms. The shelf is 2-5/8" thick with a grid top pattern that allows liquids to flow through and promotes air circulation.