Casement Window Sashes When largely connected with double-hung windows, window sashes are available on any kind of window which moves, such as the casement window. Treatment have to be taken with casement windows when they are open up. A substantial wind can move casement window sashes and split them off. https://flushceilinglights21097.frewwebs.com/36572806/the-greatest-guide-to-sash-window-draught-proofing