The Penn Elcom R1297-DVS-2U is a 2U 19" vertical mounting divider shelf system engineered to house multiple smaller, narrow components upright inside a standard network or server rack. It provides an organized solution for side-by-side vertical storage of 2-10 devices, which is ideal for external power supplies, compact network switches, or miniature computers. The kit includes 5 individual dividers, which can be adjusted laterally across the shelf slots to match the exact thickness of your equipment. To prevent devices from sliding or getting damaged during transport, the system features a comprehensive retention kit consisting of an upper clamp bar, a backstop bar, and a front-mounted "travel lock" bar.