DuraGranit SinksDuraGranit sinks are naturally silent. This German manufacture uses 20 percent acrylic resin, which acts as a natural acoustic insulation material. GR 101 GR 102 GR 105 GR 106 GR 107 GR 115 GR 201 GR 201b GR 201cr GR 202 GR 202b GR 202c GR 202cld GR 202d GR 202e GR 202f GR 204 GR 204ld