Acquired 2 models for our entrance bedrooms as we have been on a loud primary road. Mounted them yesterday and the difference in noise is astounding. I went for your six.4mm laminated glass and positioned the models around the front on the window sill to provide maximum gap. Undesired noise https://laneznyhq.develop-blog.com/32808291/everything-about-thermal-insulation-solutions-in-chelsea