We all know that not all out of the box Revit MEP content meets our company standards, and often that is the result when we are talking about the diffuser tag in RMEP.
I have created a short video on how you can modify the OOTB diffuser tag to pull the neck size and type mark parameters from the diffuser itself.
The finished tag will look like this:
Here is the link to my youtube video. Creating Custom Diffuser Tag