2U Double-Sided Horizontal Cable Management Panel with Finger Duct & D-Ring Hooks The CMPNL2U 2U Horizontal Cable Management Panel mounts to a standard 19\" 2 or 4-post server rack to help you organize horizontal cabling, using the combination of a finger duct and D-Ring Hooks. Constructed of high-quality steel, the cable organizer is designed as a double-sided solution offering cable management on both the front and back of the panel. The front is equipped with 4 horizontal D-Ring hooks, while the back has 2 additional hooks as well as a cable duct with a series of fingers that help you route your cables where you need them, and reduce cable strain in the process.. As an added benefit, the panel also promotes proper airflow through the rack by closing off open spaces between equipment. For easy installation, this horizontal cable organizer comes complete with 2 sets of rack screws (10/32 and 12/24).