# Mesh

> Describes a Mesh source for use with NavMeshBuildSource. Mesh sources must be positioned within 100,000 units of the world origin and must not exceed 100,000 units in any axis-aligned dimension.

## Definition

* **Type:** Field
* **Namespace:** [UnityEngine.AI](/engine/6000.3/script-reference/unityengine/ai.md)
* **Assembly:** UnityEngine.AIModule

```csharp
Mesh = 0
```