Unlike a cable trench, which is installed underground, a cable tray and cable trench system is used above ground, offering a flexible, visible solution to manage cables. While they serve the common purpose of routing and securing cables, these systems differ in design, application, installation, and. them with us. Their versatile design supports easy modifications and provides effective ventilation for heat dissipation. Fittings can, on the one hand, be used for horizontal or vertical changing of the routing direction or, on the other, to change the height or width of the. maintain spacing or to keep cables in place when the tray is ect the minimum bend ra-dius for cables as they exit the bottom of the cable tray.