This suspension systems can be used with a cable tray up to 30 cm wide. This is a suspension system using U profile and Tray Suspension. It is used to hang the cable tray systems. In this system, due to Central Suspension, it is difficult to lay the cable on the tray. It is similar to the "A" type suspension system. But it offers a more rigid structure than the "A" type.  In the case of very long cable laying, the preference of the "I" type of suspension system will be beneficial in terms of workmanship.