If you are wondering what a perforated cable tray is, then its answer is as follows. It is a type of cable tray which has holes on its side rails and the bottom sheet. These are used to pay the power and signal cables. The benefit of these trays is to distribute electricity, gyms, hospitals, airports and departmental stores. The cable trays are also used for signaling in industrial plants. These have a sound structure which is suitable to carry all types of cables. The cable trays are specially designed to ensure suitable ventilation along with proper positioning for laying the cable lines.