# Sandbox.PolygonMesh.UnionExtentsForFaces

```csharp
void UnionExtentsForFaces(IEnumerable<FaceHandle> hFaces, Transform transform, FaceExtents extents)
```

### Parameters

- `hFaces` (`IEnumerable<FaceHandle>`)
- `transform` (`Transform`)
- `extents` (`FaceExtents`)

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