Venetian windows with wide timber mullions (triple box sash) or masonry framing are treated as a few individual windows. "The cost of sash windows will vary significantly based on quite a few components like the dimension on the windows and also the design and style," describes Sam Churchill of timber window https://finngpyzf.blog5star.com/36028665/5-tips-about-sash-window-draught-proofing-you-can-use-today