Window types include fixed, casement, hung, sliding, awning, hopper, vent, bay, bow and louvre. You can edit a window’s type on the window’s Basic property page.
To edit a window type:
Select the window whose properties you want to change.
Right-click and select Properties, or select Edit > Modify Elements > Properties.
In the Windows dialog, select the Basic tab.
In the Type area, click on the desired window type to select it.
Click OK.