: Autodesk maintains a specific support article, " Autodesk Revit 2018 Content ," which lists all available family libraries, project templates, and family templates for every supported language and locale.
If you're looking for more information on Revit and the Revit Family Library 2018, here are some additional resources: download revit family library 2018
But here is the frustrating truth: If you are looking at an empty "Imperial" or "Metric" folder, don't panic. Here is exactly how to get it back. : Autodesk maintains a specific support article, "