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DRAUGHTWISE
SASH AND CASE WINDOWS: A SHORT HISTORY

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17th CENTURY

The first sash windows, made at the end of the 17th century, had heavy glazing bars and numerous panes in each sash.

18th CENTURY

Once established, the sash window gained acceptance with great speed and quickly arrived at a 'six over six' pattern with thinner glazing bars. These became widespread early in the 18th century and remained in use for a period of 150 years.

19th CENTURY

With the advent of low cost, mass produced glass in 1838, sashes with bigger panes and fewer astragals quickly became the norm resulting in designs with one pane of glass in each sash.