WINDOW RESEARCH INSTITUTE

chicago window

When Chicago was redeveloped after the Great Chicago Fire in 1871, the high-rise construction took off with the introduction of new technologies such as elevators and rigid joint structures with fireproof steel frames. Fixed windows with one large fixed glass pane flanked by vertical sash windows that could be opened and closed to let in light and air became an established feature at this time. Later, these windows came to be known as Chicago windows.

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