Override Building Construction Type

[%4seasons%]

I tried to override the building construction type (e.g wall, windows etc.) to one that I buid up or created but its not included from the choices on the drop down (see attached). How can I include those walls I created from this drop down list?

[CoreyDaun]

I believe what you're looking for is the file located here:

C:\Program Files\Autodesk\Revit MEP 2013\Program\Constructions.xml

Editing this file will allow you to add customs types to those pull-downs. If you need to, search this forum for the proper techniques for editing XML files.