There's A lot discussion regarding the origins of the sash window. Some proof indicates they had been invented in Holland in the 18th century. However, Newer research believe They could have already been invented suitable right here in the UK, as early given that the 17th century. , 23 June 2025 https://garrettfigat.canariblogs.com/a-secret-weapon-for-sash-window-draught-proofing-50876372