The Scirocco mechanism for large-scale distribution is made of high-tensile steel and mounted on a load-bearing frame prearranged for connection of the sofa body. The mechanism is made of wooden slats. In the area which, when the mechanism is closed, constitutes the seating surface, the slats are replaced by elastic straps. The mechanism can accommodate different types of polyurethane mattresses: 10 and 12 cm thick, 190 cm long. The mechanism is easy to open and close using a practical polyester loop handle. The insertion mechanism, with 2 folds, is opened at the front by lifting. The structure is oven-painted with epoxy powders..