| IfcSpatialElement | C | IfcSpatialElement containing Grid | Geometry | 
| GlobalID | G | Global identifier (GUID) formated to IFC string syntax.  Automatic assignment if empty | Text | 
| Grid Name | N | Grid Name | Text | 
| Desc | D | Description | Text | 
| Plane | P | Plane | Plane | 
| U Grids | U | Curves defining U Grid Axes | Curve | 
| U Grid Labels | L | U Grid Labels, will default to series A,B,C... | Text | 
| V Grids | V | Curves defining V Grid Axes | Curve | 
| V Grid Labels | L | V Grid Labels, will default to series 1,2,3...n | Text | 
| W Grids | W | Curves defining W Grid Axes | Curve | 
| W Grid Labels | L | W Grid Labels | Text | 
| Type | T | Grid Type(0=RECTANGULAR 1=RADIAL 2=TRIANGULAR 3=IRREGULAR 4=USERDEFINED 5=NOTDEFINED) | Integer | 
| UserDefinedType | U | User Defined Grid Type | Text |