John Flanagan details an interesting concept in a recent post – he shows how you can use a Basic Wall with two Glazing layers separated by a core layer to essentially model double glazing systems.

You then simply add this Basic Wall to a Curtain Wall type as the applied Panel.  Great idea!

Read the whole post at:
Create a Curtain Wall type with double-glazed pane – Blog – CADline Community

Link is dead so I have resurrected the content from archive: