Cable "Ladders" For Routing Cables Above Racks & Around Buildings
Cable Ladders look sort of like regular ladders, but they are designed to mount horizontally (usually). Cables are run across the "rungs" of the ladder from point to point. The ladders can make turns, and go vertical between floors.
Cable ladders are usually used in commercial low-voltage environments when a lot of cables need to be installed, and often terminate at equipment racks.