HE steel sections are used for assembly on site which have a  lateral groove capable of firmly gripping the panels stacked on each other to form the barrier.

The Alufon panels are fitted in from the top of the uprights positioned at modular distances with each end in between the wing elements of the sections and gripped by compensatory seals which means no rigid connections are called for. Stability is ensured also by the horizontal closing element that has a continuous fit-in shape which avoids deformation and guarantees greater resistance of the system to knocks, wind and snow loads but without restricting movement due to heat expansion.