Checks if given type is valid flexible duct type. 
Namespace: Autodesk.Revit.DB.Mechanical
Assembly: RevitAPI (in RevitAPI.dll) Version: 24.0.0.0 (24.0.0.0)
Since:  2014 
Syntax
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Parameters
- document
 - Type: Autodesk.Revit.DBDocument
The document. 
- ductTypeId
 - Type: Autodesk.Revit.DBElementId
ElementId of the flexible duct type to check. 
Return Value
True if flexible duct type can used for this duct, false otherwise.Remarks
 A type is valid for flexible duct if it can be used to the flexible duct element. 
Exceptions
| Exception | Condition | 
|---|---|
| Autodesk.Revit.ExceptionsArgumentNullException | A non-optional argument was null |