# Sandbox.Rendering.GradientFogSetup.VerticalFalloffExponent

```csharp
float VerticalFalloffExponent { get; set; }
```

The exponent controlling the vertical falloff of the fog.

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