how can i make a non opening sash window open
1 Sliding windows-only one side of the window can open. 2  The other side is usually fixed. 3  Fixed windows-Obviously these never open. 4  Other windows-And various other window options that crack open partially, none even as far as sliders or double hung windows.n the event you have single-sash casements, you will have no muntins. In the accompanying picture, you can see how casements open up your view. This homeowner went from triple single-hung windows to dual casements.