Share Email Facebook Twitter LinkedIn SpaceSet.Size Property Returns the number of objects that are in the set.Namespace: Autodesk.Revit.DB.MechanicalAssembly: RevitAPI (in RevitAPI.dll) Version: 25.3.0.0 (25.3.0.0) Syntax C# public virtual int Size { get; }Property ValueInt32 See AlsoReferenceSpaceSet ClassAutodesk.Revit.DB.Mechanical Namespace