Base quantities that are common to the definition of all types and occurrences of duct fittings.
The length of the object.
Calculated at midpoint of cross-section and equal to the distance along the flow path from the port inlet to the port outlet. For junction fittings, it indicates the length of the longest flow path.
Area of the cross section.
At the inlet, including the duct fitting itself and the interior flow space.
Area of the cross section of the object.
Including the duct fitting and excluding the interior flow space.
Total area of the surfaces of the object (not taking into account the end cap areas), normally generated as perimeter * length in case of extrusions.
Total Gross Weight of the object without any add-on parts and not taking into account possible processing features (cut-out's, etc.) or openings and recesses.