Erase 3D Ductwork (Window)

The Erase Double Line (Window) command is used to erase the 3D ductwork for all of the ducts in a windowed area.

To erase the 3D graphics for a duct, go to
Ribbon: DM HVAC→3D-BIM→  Erase 3D Ductwork (Window)
Pulldown Menu: DM HVAC→3D-BIM→Erase 3D Ductwork (Window)

You will be prompted to specify the first point of the window around the 3D ductwork to erase.

Draw triple line:>> Select ducts: First corner of window:

You will then be prompted to specify the second point of the window.

Draw triple line:>> Select ducts: Second corner of window:

All of the 3D ductwork that is inside or crossed by the window will be erased.