Autodesk Revit MEP

[#1]

Hi

In "Mechanical Settings", in "Main" I have a item named  "Rectangular Duct:Mitered Elbows/Beveled Taps".

How can I add a new item like "Rectangular Duct:Radius Elbows/Beveled Taps" to it. 

Thanks

[#2 · Accepted solution]

Create a new duct type in the families section of the project browser.

[#3]

Thanks a lot