A cable tray system is used to support insulated electrical cables used for power distribution, control, and communication. Cable trays are used as an alternative to open wiring or electrical conduit systems, and are commonly used for cable management in commercial and industrial construction. Since the new cables can be installed by laying them in the tray, cable trays are useful when changes to the system are expected. There are a few types of cable trays including: solid-bottom trays, cable channel or trough trays, ventilated trays and ladder trays. There are a large number of cable tray fittings that are made compatible with each type of tray. These fittings help in maintaining support of the cable tray system. Shop Graybar's collection of cable tray and fittings to find exactly what works for your job.