The PCS-3-4 from Middle Atlantic is rack-mountable panel and cable spool system. It can be mounted in a standard 19" rack and used to spool and manage cables. The spools have a 2.5" (63.5 mm) bending radius, which is ideal for fiber and copper cabling.
The PCS-3-4 comes with 3" deep spools, and includes mounting hardware and two brackets, which enables you to wind up cables in a complete circle. It's a great system for managing excess fiber or copper cable slack within a rack. This system comes with 4 pieces.