# Union(PhysicsAABB)

> Create a union of the specified AABB and this AABB where resulting AABB completely encapsulates both AABB.

## Definition

* **Type:** Method
* **Namespace:** [UnityEngine.LowLevelPhysics2D](/engine/6000.3/script-reference/unityengine/lowlevelphysics2d.md)
* **Assembly:** UnityEngine.Physics2DModule

```csharp
public readonly PhysicsAABB Union(PhysicsAABB aabb)
```

### Parameters

**** (\[PhysicsAABB]\(/engine/6000.3/script-reference/unityengine/lowlevelphysics2d/physicsaabb)): The AABB to create a union with.

### Returns

| Type                                                                                        | Description               |
| ------------------------------------------------------------------------------------------- | ------------------------- |
| [PhysicsAABB](/engine/6000.3/script-reference/unityengine/lowlevelphysics2d/physicsaabb.md) | The results of the union. |