DuraShelf 66" Solid Top Shelving is a tough all-plastic industrial storage solution. Made of high-density polyethylene (HDPE), DuraShelf features easy no-tool assembly. It will not rust, is chemically resistant, and is ideal for HAZMAT storage or maintenance rooms. The 9" floor clearance allows for easy cleaning under and around the shelving unit. DuraShelf is UV treated and can be used indoors or outdoors. Solid Top shelving is recommended for higher weight capacities or for preventing cross-product contamination. Each shelf is 2-5/8" thick and the solid shelf design helps to prevent cross-product contamination between shelves. Shelves are spaced 21-3/8" apart.