Through the convert of that century the double-hung sliding sash was introduced, although it was not commonly adopted until the mid eighteenth century. From that period onward the double hung sash remained well-known, becoming adapted to accommodate varying architectural models. In the situation of old windows, one of several major https://edwinzrhzo.blogginaway.com/36214454/not-known-facts-about-sash-window-draught-proofing