The window is ideal it cuts out the many road noise and it has now produced the place warmer. The design and workmanship are amazing. Now we have a stated building and Although the secondary glazing is usually a sash unit, it is actually invisible from the outside. ENERGYSAGE is https://trumanw007lbp2.p2blogs.com/33618832/the-basic-principles-of-clear-view-secondary-glazing