# Sandbox.PolygonMesh.ExtrudeFaces

```csharp
void ExtrudeFaces(FaceHandle[] faces, out List<FaceHandle> newFaces, out List<FaceHandle> connectingFaces, Vector3 offset = null)
```

### Parameters

- `faces` (`FaceHandle[]`)
- `out newFaces` (`List<FaceHandle>`)
- `out connectingFaces` (`List<FaceHandle>`)
- `offset` (`Vector3`), default `null`

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