Partitioning made up of a self-supporting galvanised steel framework consisting of a 48 mm horizontal structure (channel) on a TECSOUND® S50 BAND 50 damping strip and a 46 mm vertical structure (stud) placed every 600 mm, on which two 12.5 mm gypsum plasterboard panels will be screwed on both sides with a self-adhesive synthetic acoustic insulation sheet with a polymeric base without asphalt of 2,000 Kg/m3 density, 7 Kg/m² and 3.5 mm thickness type TECSOUND® SY 70 between the panels on one side; placement of absorbent material such as mineral wool of 45 mm thickness and density 50 Kg/m3 between the studs. Level of acoustic insulation to airborne noise: RA = 53.5 dBA