Vertical separation element made up of a self-supporting galvanised steel framework made up of a double 48 mm horizontal structure (channel) on a TECSOUND® S50 BAND 50 damping band and a 46 mm vertical structure (stud) placed every 600 mm on which two 12.5 mm plasterboard sheets will be screwed on both sides with a self-adhesive acoustic sheet with an elastomeric bitumen base, reinforced, flexible and 1500 kg/m3 density, 6 Kg/m2 and 4 mm thick, type INSOPLAST AA 6 between the sheets; placement of absorbent material such as mineral wool, 50 mm thick and 50 Kg/m3 density between the studs. Level of acoustic insulation to airborne noise: RA = 54 dBA