# Sandbox.PolygonMesh.SetFaceHidden

```csharp
void SetFaceHidden(FaceHandle hFace, bool hidden)
```

Hide or show a face. Hidden faces are editor only and not saved, they are
excluded from the rebuilt model so they don't render or trace.

### Parameters

- `hFace` (`FaceHandle`)
- `hidden` (`bool`)

Declared in [Sandbox.PolygonMesh](/api/Sandbox.PolygonMesh).
Assembly: `Sandbox.Engine`.