Used to carry the cables horizontally throughout the system. Accepts hinged cable retainers FRCR6BL-X, hinged cover FRHC6YL6 or split hinged cover FRSHC6YL6. Use QuikLock™ Coupler FRBC6X4YL to attach channel and/or fittings.6x4 FiberRunner® Routing System – Channel and Covers- Robust, large capacity 6x4 system ideal for use with large cable counts- Multiple spillout options provide versatility to mate to various equipment and rack configurations- QuikLock™ Couplers and Brackets reduce system installation time dramatically- Channel, covers, fittings and other non-metallic system components made from V-0 flame class rated material- Compatible with all sizes of Panduit® FiberRunner® and Panduit® Fiber-Duct™ Routing Systems, cable management, and racks- Compliant with the applicable tests in Telcordia GR-63-CORE Network Equipment Building Systems (NEBS) Level 3- For other standard colors replace suffix YL (Yellow) with OR (Orange) or BL (Black)