| 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 |