- Level: (3D, elevation, and section views only) specifies the reference level for the duct.
- Width: specifies the width for a rectangular or oval duct.
- Height: specifies the height for a rectangular or oval duct.
- Diameter: specifies the diameter for a round duct section.
- Offset: Specifies the vertical elevation of the duct relative to the current level. You can enter an offset value or select from a list of remembered offset values.
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/
: Locks/unlocks the elevation for the segment. When locked, the elevation of the segment is maintained and connections cannot be made to segments at a different elevation.