210 mm thick partition composed by 2 x 15 mm thick PregyPlac BA15 on each side, fixed to galvanized steel frame made of 150 mm horizontal U tracks (40-150-40 mm at the bottom and 100-150-100 mm x 2 mm thick at the top) and 47-149-50 mm vertical C studs. Mineral wool 120 mm thick in the cavity. According to fire classification report, 3 mm gap per meter height must be ensured at the top of the partition and mineral glass wool 12,4 kg/m³ 45 mm thick is permitted as insulation.