When you are searching for library parts (as shown in your image) and you come across the BIMComponent objects that you can download, they will hopefully have something in the description to say if they are 2D or 3D.
If not then unfortunately it will be pot luck - download the file and see what it is.
Once downloaded or if it is an existing object in your library, then you can just look at the 3D preview in the object settings.
No 3D image - it is 2D only - unless it has a 3D on/off parameter in the settings.
Barry.
One of the forum moderators.
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