| WallKey | int64 | The unique key identifying this custom wall. | Category: B1SiteAreaCustomWallSaveData |
| NodeFrom | int32 | Deprecated: do not use. Use PaintedWalls instead. | Category: B1SiteAreaCustomWallSaveData |
| MaterialValues | FB1ObjectCustomizeSaveData | Deprecated: do not use. Use PaintedWalls instead. | Category: B1SiteAreaCustomWallSaveData |
| CutWalls | TArray | The list of cut-out openings (doors/windows) on this wall. | Category: B1SiteAreaCustomWallSaveData |
| MaskWalls | TArray | The list of masked sections on this wall. | Category: B1SiteAreaCustomWallSaveData |
| HideWalls | TArray | The list of hidden sections on this wall. | Category: B1SiteAreaCustomWallSaveData |
| HalfWalls | TArray | The list of half-height wall sections on this wall. | Category: B1SiteAreaCustomWallSaveData |
| PaintedWalls | FB1SiteAreaPaintedWallSaveData | The painted surface data for the two faces (inner/outer) of this wall. | Category: B1SiteAreaCustomWallSaveData |