Share Email Facebook Twitter LinkedIn Duct.IsPlaceholder Property Identifies if the duct is a placeholder or not. Namespace: Autodesk.Revit.DB.MechanicalAssembly: RevitAPI (in RevitAPI.dll) Version: 26.1.0.0 (26.1.0.34) Syntax C# public bool IsPlaceholder { get; }Property ValueBoolean See AlsoReferenceDuct ClassAutodesk.Revit.DB.Mechanical Namespace