Build or add on to your shelving with additional posts that make for limitless configurations. Numbered marks make shelf leveling easy and fast at 1" increments. Includes floor levelers and plastic top caps. <b>Nexelon</b> is the top of the line blue metallic finish designed to handle extreme wet, hot or cold environments. NEX<b>Guard</b>, an anti-microbial agent, protects the epoxy coating from bacteria, mold, and mildew that causes odors and product degradation. <b>NSF</b> approved for wet or dry use. <b>Limited lifetime warranty</b> against rust and corrosion. Set of 4.<br><br>