Tunnel boxes

The ST200 is the mortar finish version of our shutter drawers. It is made of polystyrene and consists of an inner lattice of 3 mm of galvanized steel. It offers exterior finishes of Heraklit plates. This material provides more adhesion to the subsequent plastering or coating and is a great acoustic insulator.
The lower aluminum profiles can be of different shapes and sizes according to the needs of each project.