James Hardie Revit curtain wall files 2013.zip
James Hardie Revit basic wall files 2013.zip
JH_Product_Profiles_Archive.zip (CAD DWGs)
(you *may* have to use Firefox with Downthemall to properly download from these links)
To recursively extract all of the DWGs from the last link, use the method described here.
via ACCEL HARDICONTENT | JAMES HARDIE