Monobloc tambour in tick sheet metal of 7/10e. The base is reinforced by 2 omegas profiles of 1.2mm. The bottom of the tambour is raised ti the same level as the edge. Rails under the top. The inner cheeks are provided with performations every 20mm for adjusting the shelves. The metal body is painted in epoxy-polyester powder. 4 shelves are provided allowing 5 rows of hanging files.