Trimble - Transforming the way the world works.

 This viewer is compatible with 64-bit operating systems (Windows® 7, Windows® 8, and Windows® 10).

Note: This viewer is compatible with Trimble® DuctDesigner 3D®, Release 2018 v1, and can be used only on computers running AutoCAD® 2018, AutoCAD® Architecture 2018, and AutoCAD® MEP 2018. It will not work with previous versions of Autodesk applications or Trimble® DuctDesigner 3D®. Please make sure you download the viewer for a compatible version of AutoCAD.