Box structure for linking between horizontal and vertical ducts of a mechanical ventilation installation of a building

摘要

The case has a perforated metallic plate (16) and an acoustic insulating material (17) which permit to direct air flow entering via a lower opening (10) towards a radial air outlet opening (14). The opening (14) is connected to a horizontal conduit connected with a ventilation group. The plate delimits a volume of air filled with the material (17), with a lid (13) and a body (9).