- Define the curve of the layout path with either the AutoCAD Fillet or Spline command.
- Select the polyline, line, arc, or spline you want to convert, right-click, and click Convert to
Flex Duct. - Do one of the following:
- Press Enter or enter n (no) to leave the layout geometry in the drawing.
- Enter y (yes) to erase the layout geometry from the drawing.
- Modify flexible duct properties in the Properties palette.