# length

> Length of the cone to emit particles from.

## Definition

* **Type:** Property
* **Namespace:** [UnityEngine](/engine/6000.3/script-reference/unityengine.md)
* **Assembly:** UnityEngine.ParticleSystemModule

```csharp
public float length { get; set; }
```

### Remarks

**Note:** [ParticleSystem.ShapeModule.length](/engine/6000.3/script-reference/unityengine/particlesystem/shapemodule/length.md) is only valid when [ParticleSystem.ShapeModule.shapeType](/engine/6000.3/script-reference/unityengine/particlesystem/shapemodule/shapetype.md) is set to `ConeVolume` or `ConeVolumeShell`. Additional Resources: [ParticleSystem.ShapeModule.shapeType](/engine/6000.3/script-reference/unityengine/particlesystem/shapemodule/shapetype.md).