The 90% open structure of the cable trays makes it easier to visually inspect and maintain the cables, guarantees minimum cable temperature rise and minimises retention of dust or water: this ensures a higher safety level, substantial savings on operating costs and faster . The 90% open structure of the cable trays makes it easier to visually inspect and maintain the cables, guarantees minimum cable temperature rise and minimises retention of dust or water: this ensures a higher safety level, substantial savings on operating costs and faster . It offers genuinely flexible cable management, making it possible to create multiple configurations in a vast array of finishes for optimum integration in any environment. A safe, high-performance and cost-effective system The patented safety edge (T-joint system which is kinder to the hands) and. For a long time, wire mesh trays sat in a narrow corner of the cable management world. Useful, yes, but mostly limited to IT rooms or small control setups. Today, wire mesh cable trays are being specified far more often, and not by accident. Unlike traditional solid-bottom trays, its open mesh design provides better airflow and simplifies cable routing. Due to the large span capabilities of this DEFEM system, fewer brackets, rods and.