The Tournus 500816 stainless steel divider fits between the removable shelf pieces of a Tournus commercial anodized aluminum shelving unit to provide a 6" high barrier that helps prevent shelved goods from rolling sideways, and helps keep shelves organized by separating shelved goods. It is made of AISI 441 stainless steel to resist corrosion. This divider fits 22" deep Tournus commercial anodized aluminum shelving units with part numbers starting with PLH or PCH. The online instructional video for these shelves shows how to install a divider; no tools are required. The unit measures 6 x 1-47/128 x 22 inches (H x W x D). (H is height, the vertical distance from lowest to highest point; W is width, the horizontal distance from left to right; D is depth, the horizontal distance from front to back.) Tournus Equipement manufactures stainless steel equipment for professional kitchens, catering, and fish sales counters. The company, founded in 1910 and headquartered in Tournus, France, meets International Organization for Standardization (ISO) standard 9001.