Cable tray fittings like elbows, bends, tees, crosses, and risers are used to change the direction of cable routing. They offer an alternative to open wiring or electrical conduit systems and are necessary for cable management in commercial and industrial construction, as well as. Cable trays - Fittings, cable trays, screw connection. Cable trays are produced in different heights and widths to give more choice for loading space availability. The Ladder Tray features light, rugged, tubular steel construction.