# fixedItemHeight

> The height of a single item in the list, in pixels.

## Definition

* **Type:** Property
* **Namespace:** [UnityEngine.UIElements](/engine/6000.6/script-reference/unityengine/uielements.md)
* **Assembly:** UnityEngine.UIElementsModule

```csharp
[UxmlAttribute(obsoleteNames = new string[] { "itemHeight", "item-height" })]
public float fixedItemHeight { get; set; }
```

### Remarks

This property must be set when using the [\_virtualizationMethod](/engine/6000.6/script-reference/unityengine/uielements/baseverticalcollectionview/virtualizationmethod.md) is set to `FixedHeight`, for the collection view to function. If set when [\_virtualizationMethod](/engine/6000.6/script-reference/unityengine/uielements/baseverticalcollectionview/virtualizationmethod.md) is `DynamicHeight`, it serves as the default height to help calculate the number of items necessary and the scrollable area, before items are laid out. It should be set to the minimum expected height of an item.