You may be thinking 'why don't you just make a Door with frame or download one from ARCAT or Autodesk Seek'? The person who is using Revit at the time will use what Family is immediately available for the immediate need. So from that time on I recommend to NEVER use the 'Single-Flush' Door Family and provide a door with frame Family. But that dreaded 'Single-Flush' door still rears it's ugly head after a reinstall or a new new versions etc.
So, thank you Revit Development team for paying attention to this seemingly small detail. Now there are both commercial and residential folders with doors with frames installed with Revit.
There is also a separate hardware folder which contains a variety of hardware Families which can be loaded into a Door Family.