Rectangular Components - Crank Offset
- Last UpdatedJan 13, 2026
- 2 minute read
The task of creating an HVAC Component is initiated from the HVAC Window.
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Select Rectangular in the Categories dropdown list and then Cranked Offset in the Available Type dropdown list to display the Cranked Offset window:

You are required to input the following dimensions:
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Duct width AA
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Duct depth AB
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Length
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A offset
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B offset
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Arrive Extension
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Leave Extension
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To visualize how the dimensions equate to the actual piece of HVAC select Picture to display a detailed drawing for Rectangular Components Catalog Element - Crank Offset.
Note: The fields will be pre-populated with default dimensions. These dimension are governed by the details defined in the HVAC Catalog. The Arrive and Leave Extension default is auto but can be changed by the user to a required dimension.
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Select Transpose width/depth to exchange Duct Width AA dimension with Duct depth AB dimension.
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After selecting the type of joint to use for the Arrjoint and Leajoint, enter the Aoff Direction.
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In the Aoff Direction enter the direction for the Aoffset relative to the Point of Origin. Valid dimension for are E (East), N (North), U (Up), -E (negative East), -N (negative North) or -U (Negative Up). Valid dimension are X, Y, Z, -X, -Y or -Z.
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In the Connect list, select Connect or Unchanged:
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Select Connect (default when Create is selected) - connects the piece of HVAC to the previous one.
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Select Unchanged (default when Modify is selected) - positions the component at the co-ordinates 0.00.
Note: Unchanged is usually used, when Modify is selected, it does not connect the component but positions it at 0.00, in effect in a floating position.
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Select Defaults to reset all the fields back to when the Cranked Offset window was opened.
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Select Fit to orientate the Cranked Offset to automatically match the outlet (p-leave) of the previous piece of HVAC to the inlet (p-arrive) of the next piece.
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Select OK to create the Cranked Offset component and close the Cranked Offset Window. You will be returned to the HVAC Window.
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Select Cancel to discard all field changes and close the Cranked Offset window.