Source google image: https://www.tyboat.com/administrer/upload/vetus-isolation-phonique-sonitech-40mm-aluminium-600-x-1000-mm-_st040w_1.jpg
Isolant phonique 40 mm
Source google image: https://www.tyboat.com/administrer/upload/vetus-isolation-phonique-sonitech-40mm-aluminium-600-x-1000-mm-_st040w_1.jpg