These models are compatible with all versions of Revit 2017 and newer.
These models are in imperial units by default but come with alternate metric-type catalogs so that they can be easily used in metric projects.
What You Get:
.ZIP file containing:

• .RFA files (Revit Family Files)
• .RVT Example Project File
• .txt Type Catalog Files (Both Metric and Imperial)
• Material Image Files
• .PDF Readme File
• .PDF End User License Agreement