They are acrylic or plastic panels that suit snugly more than your windows, delivering an additional layer of insulation. That improves the opportunity for air circulation, that's exacerbated by The dearth of seal concerning panes. If your renovation challenge is aspiring to higher levels of thermal efficiency then primary double, https://thermal-performance36788.snack-blog.com/31970116/not-known-details-about-acoustic-performance