Integrated system auction + rope for stretches to the veneziana from 25 & 15 milimeter draft of an innovative system that allows the rope to slide through the asticina of guideline of is stretched and to carry out its to regulate climb function: the reduction, instead, happens pulling the guideline auction simply without intaccare the possibility to stop stretches it to the preferred height; the guideline of the lamelle happens in the way classic.

All it offers an advantage is aesthetic that they works