Sash windows comprise of movable parts called sashes. The sashes are responsible for holding glasses in a vertical or horizontal position. The windows are also called hung sash, and usually slide when opening or closing. The technology developed first from the inventions of Robert Hooke.
The inventions were first seen in England at Ham House. Many people later started using the idea because of its many advantages. The Georgian and Victorian people are known to use the technology more than any g
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