DTU (Technical University of Denmark) is building a new wind tunnel at Campus Risø, Roskilde, Denmark for use in aerodynamic and aeroacoustic measurements. The tender is for the delivery and installation of high quality honeycomb in the air line. The cross section is up to 9.9 m x 6.6 m with a wind speed up to 12.5 m/s where the honeycomb is located.