# sizeCustom

> The size of the bounding box in which the 3D grid of interpolated Light Probes is generated.

## Definition

* **Type:** Property
* **Namespace:** [UnityEngine](/engine/6000.0/script-reference/unityengine.md)
* **Assembly:** UnityEngine.CoreModule

```csharp
public Vector3 sizeCustom { get; set; }
```

### Remarks

This is used when the [LightProbeProxyVolume.boundingBoxMode](/engine/6000.0/script-reference/unityengine/lightprobeproxyvolume/boundingboxmode-1.md) property is set to **Custom**.