The HCR18SZPL is a pair of zinc-plated mounting rails designed for equipment racks. These rails are 38U high, measuring 66.72 inches (1695 mm), and are built to E.I.A. spacing standards. They feature a durable zinc-plated finish and offer versatile installation, allowing them to be mounted directly to a frame in full front and back positions. For greater flexibility, they can also provide full front-to-back adjustment when used with depth members. These rails are ideal for securely installing various components in server and data cabinets.