Source google image: https://www.banio.be/10298-large_default/grohe-set-d-isolation-phonique-pour-cuvette-wc-suspendue.jpg
Isolation phonique wc
Source google image: https://www.banio.be/10298-large_default/grohe-set-d-isolation-phonique-pour-cuvette-wc-suspendue.jpg