Hubbell's NEXTFRAME® Ladder Tray is the effective and widely used cable runway that supports and delivers bundles of cable between cabinets, racks, and closets, along walls, and suspended from ceilings. There are several types of cable trays, including ladder, perforated, solid bottom, basket, and channel trays. Each cable tray type performs a different function and comes in various materials such as aluminum. Cable trays play a crucial role in managing and supporting electrical cables in industrial, commercial, and residential applications. Wire Mesh Cable Tray. A cable tray system supports and protects both power and signal cables and facilitates upgrading, expanding, reconfiguring, or relocating networks. Although typically suspended.