by Garry Stockton
Revit - Connecting Grilles to Ductwork
Are you aware that you can develop your Duct run over the Grilles/Air Terminal and connect by simply selecting the terminal then the Duct?
Once your Grilles/Terminals are in place, run your duct above them.
Select each Terminal and select ‘Connect into’ on the Ribbon Bar.
View in 3D to see results.