| EntityId | int64 | The entity ID of the object responsible for this wall mask. | Category: B1SiteAreaMaskWallSaveData |
| NodeFrom | int32 | The index of the wall node from which this mask segment originates. | Category: B1SiteAreaMaskWallSaveData |
| Start | float | The start position along the wall where the mask begins. | Category: B1SiteAreaMaskWallSaveData |
| End | float | The end position along the wall where the mask ends. | Category: B1SiteAreaMaskWallSaveData |
| Size | FVector | The 3D size of the masked wall area. | Category: B1SiteAreaMaskWallSaveData |
| Location | FVector | The world location of the masked wall area. | Category: B1SiteAreaMaskWallSaveData |