There is certainly much debate in regards to the origins of the sash window. Some proof implies they had been invented in Holland from the 18th century. However, more recent reports feel They might have been invented appropriate below in the united kingdom, as early as the 17th century. Pictured above: https://precision-eyebrow-tweezer40570.answerblogs.com/36327019/rumored-buzz-on-sash-windows