The 4 HE cable ladder elements consist of 4 individual rungs for horizontal cable management directly at the 48.3 cm (19") distribution level. Their open mounting holes allow the ladder elements to be easily added later to the 48.3 cm (19") system hole pattern of the mounting level and secured with the existing mounting screws of the installation components. It is possible to expand existing units by linking them with connection combs. The connection comb is clipped between two ladder elements, connecting them by forming an additional guiding chamber between the ladder elements. The connection combs needed for linking are included with each unit. Each individual rung has a height of approximately one height unit (44.45 mm), allowing for HE-related cable management of entire cable bundles. Each cable rung can be selectively opened independently of the others and securely closed again using a rotary latch. This enables easy structuring of the cabling as well as flexible modifications.