The Vario Rungensystem, a stanchion system, consists of sideways moveable stanchions that can be set to the required width depending on the steel mat. The trailer offers pairs of four or eight stanchions. Next to the stanchions three portals secure the load to prevent it sliding forwards or backwards. These portals consist of two plug-in stanchions and a telescopic crossbeam that can likewise be set to the width of the steel mats and tensioned with the stanchions.