At sashwindows.ie we offer you several combinations of window design and glazing bar options.
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Single sash window
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Double sash window
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Triple Sash window
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Glazing bar design – changes through time
Georgian (18th Century)
Georgian windows were designed with a special Classical relationship between their widths and heights, known as the Golden Mean (approx 1:1.6). The glass panes were designed to conform to these same proportions. The overall effect was a carefully contrived harmony between glass and window frame proportions. Even where opes had to depart from that proportion, the glass proportions were maintained in that ratio, by having a different number of panes in the top and bottom sash, as illustrated below.
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6 over 6
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3 over 6
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3 over 3
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Regency (early 19th century)
Later, Regency windows used the ability (then new) to make larger glass panes, as seen here:

Victorian (mid-to late 19th century)
By Victorian times, even larger glass panes allowed 2 panes over 2

Edwardian (early 20th century)
The final sash window development, at the turn of the twentieth century, was the elimination of that last vertical glazing bar, in the Edwardian window.






