Cable tray hangers (also known as suspension stems, ceiling stems, or hanging brackets) provide the most secure and professional way to suspend cable trays, cable ladders, and trunking systems from ceilings. 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 are components used in the wiring of buildings to support insulated cables and organise them to be hidden from view. And discover essential cable tray accessories Risers, Bends, Tees & Brackets Cable Tray Straights - choose from 50mm, 75mm, 100mm, 150mm and 300mm.