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# init(verticalSizeClass:)

Creates a trait collection that contains only a specified vertical size class.

```
init(verticalSizeClass: UIUserInterfaceSizeClass)
```

## Parameters

`verticalSizeClass`

A [`UIUserInterfaceSizeClass`](/documentation/UIKit/UIUserInterfaceSizeClass) value specifying the vertical size class for the new trait collection.

## Return Value

A new trait collection containing only a specified vertical size class trait.

---

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