|  Built  | 
 Curtain wall grid lines are outside wall. If you are trying to shorten the wall, please remove grid lines, including mullions on top of them. 
 Namespace: Autodesk.Revit.DB
Assembly: RevitAPI (in RevitAPI.dll) Version: 25.0.0.0 (25.0.0.0)
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FailureDefinitionId See Also
 See Also