(8 mm) parallel slots (finger ducts) to pull cords through so you can easily organize and route cables in and out of the raceway. In practice, cable tray dimensions are a system of interrelated measurements —width, depth, length, and material thickness—that directly affect cable fill compliance, heat dissipation, structural loading, and long-term expandability. From an engineering standpoint, cable tray dimensions are not. Learn why IT Pros trust StarTech. com for performance connectivity accessories. The mechanical and electrical characteristics, tests, certifications, overall quality management, recommendations mentioned. GSPN755PY1 - Mita - Cable tray slotted 75x50 mm - 3 m - GRP PY1 40150 Shah Alam, Selangor, Malaysia.