CONTROL VERTICAL CABLE RUNS: Mounts vertically to 2-post and 4-post racks and supports both 10-inch and 19-inch rack systems, making it easy to maintain clean, structured cabling in data centers or network closet PROTECT PORTS AND REDUCE CABLE STRAIN: Helps prevent stress on connected hardware by keeping cables neatly routed; 1.8 x 3.9in (4.5 x 10cm) D-ring made from durable steel for long-term reliability and meets EIA RS-310-D standard INSTALL AND SCALE FLEXIBLY: 5-Pack 1U Network rack cable manager features a wide front opening for quick cable insertion; Combine multiple hook units for a customized rack layout REDUCE THERMAL BUILDUP: Supports passive cooling by keeping cables organized and out of airflow paths, helping maintain proper rack temperatures and prevent heat-related performance throttling THE IT PRO’S CHOICE: Built to keep racks tidy, organized, and airflow-efficient, our rack accessories are tested for strength and long-term performance; Backed by free lifetime 24/5 multilingual technical support