Air ducts are defined by their width and depth. You can edit the properties before you draw or after the component has been added to your design by selecting it and clicking the Properties tab in the right sidebar.

Note : When editing values, always press Return to accept new values in a field.

Width defines the distance from one side of the air duct to the other (length is the distance from end point to end point).

Depth defines the distance from the bottom of the air duct to the top (this dimension is not represented in 2D).