Revit 2009 family of Aluminum Arched Window. Files are included in cad, fbx, dxf.
RFA (Autodesk Revit, filesize: 680 KB), FBX (Autodesk FBX, filesize: 151 KB), PDF (PDF, filesize: 18.4 KB), DXF (DXF, filesize: 1.04 MB), DWG (AutoCAD, filesize: 138 KB)