1. Plasterboard double layer, 25 mm thickness
2. Airborne Noise Insulation in 48 mm thick
   laminated panels. The central panel is made
   of fibre and granules of SBR (Styrene Butadiene
   Rubber) and granules of EPDM (Ethylene
   Propylene Diene Monomer) with a thickness of
   8 cm and a density of 800 kg/m³ , hot pressed
   with a ureic adhesive; on either side there are
   two panels in polyester fibre of thickness 2 cm
   each and a density of 60 kg/m³.
   Panels dimensions: 1200 mm in length and
   600 mm in width.
3. Air cavity, 10 mm thickness
4. Electrical system within the metal frame
5. Plasterboard double layer, 25 mm thickness
6. Metal stud, 50 mm thickness
7. Underwall strip