The walls of the Qatar National Convention Center Theatre Hall are clad with bronze wire mesh type MULTI-BARRETTE 8123, which underlines the exclusivity of the ambience due it´s colour. The elegance of the wire mesh allows interaction with various light reflections and gives the mesh a unique aesthetic. The wire mesh selected by Arata Isozaki & Associates was specifically designed for the acoustic requirements of the theatre. The mesh is coated with clear varnish, canted to the edges and glued into black-coated aluminium frames. Due to their structure, the wire mesh types combine air permeability and acoustic neutrality with an optically closed and homogeneous overall picture. So as not to affect the homogeneous appearance of the decorative wire mesh claddings, HAVER & BOECKER developed a special invisible fastening system whereby the cassette elements remain removable.