Casement Window Sashes Even though typically connected to double-hung windows, window sashes are available on any sort of window which moves, such as the casement window. Care must be taken with casement windows when they are open up. A large wind can go casement window sashes and split them off. https://sash-window-draught-proof03322.mdkblog.com/41974997/everything-about-sash-windows