BIM/Revit 2012 Family files may be downloaded by clicking the .zip for the associated product description. Revit files will download as .zip archives. To use these files, simply unzip the downloaded file, launch Revit and open the .rfa file. Note that .rfa files require Autodesk® Revit®. Kalwall Translucent Building Systems Revit Family files are continually being developed, so we encourage you to visit this site often and to contact us if you have any questions or require a Family not listed.