Cable trays are structural systems used to support and organize electrical cables in buildings and industrial installations. They provide a safe, efficient, and accessible pathway for power, data, and control cables, facilitating easy installation, maintenance, and future expansion. Cable trays are preferred over conduits in many applications due to their flexibility, ventilation, and cost-effectiveness. They come in various types such as ladder, perforated, and solid-bottom trays, made from materials like steel, aluminum, or fiberglass, often with protective coatings to resist corrosion.