Creates a new instance of duct lining. 
   Namespace:   Autodesk.Revit.DB.Mechanical  
  Assembly:   RevitAPI  (in RevitAPI.dll) Version: 2015.0.0.0 (2015.0.0.0) 
  Since:  2012 
Syntax
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Parameters
- document
-  Type:  Autodesk.Revit.DB Document  
 The document.
- ductOrContentElementId
-  Type:  Autodesk.Revit.DB ElementId  
 The duct, fitting or accessory ElementId to which lining will be added.
- ductLiningTypeId
-  Type:  Autodesk.Revit.DB ElementId  
 The duct lining type. If the input duct lining type is InvalidElementId, the default lining type from the document will be used.
- Thickness
-  Type:  System Double  
 The thickness of the lining.
Return Value
The newly created duct lining.Exceptions
| Exception | Condition | 
|---|---|
| Autodesk.Revit.Exceptions ArgumentException | This id does not represent a duct, fitting, or accessory element. -or- This duct Lining type is invalid. -or- Thickness is not valid for assignment to insulation or lining elements. | 
| Autodesk.Revit.Exceptions ArgumentNullException | A non-optional argument was NULL | 
| Autodesk.Revit.Exceptions DisabledDisciplineException | None of the following disciplines is enabled: Mechanical Electrical Piping. | 
| Autodesk.Revit.Exceptions InvalidOperationException | The document is in failure mode: an operation has failed, and Revit requires the user to either cancel the operation or fix the problem (usually by deleting certain elements). | 
| Autodesk.Revit.Exceptions ModificationForbiddenException | The document is in failure mode: an operation has failed, and Revit requires the user to either cancel the operation or fix the problem (usually by deleting certain elements). -or- The document is being loaded, or is in the midst of another sensitive process. | 
| Autodesk.Revit.Exceptions ModificationOutsideTransactionException | The document has no open transaction. |