A recommended format: [Category]_[Manufacturer]_[Model]_[Size/Parameter]_[Configuration].rfa
While discontinued in some regions, many legacy libraries remain online. Note that Revit 2024+ users should use Autodesk’s new Content Browser. Revit Mep Library
with ample RAM and a strong single-thread CPU to handle large models without lagging. Library Management : If families aren't properly standardized or established Revit Mep Library