---
title: widthDimension
framework: appkit
role: symbol
role_heading: Instance Property
path: appkit/nscollectionlayoutsize/widthdimension
---

# widthDimension

The width dimension of an item in a collection view layout.

## Declaration

```swift
var widthDimension: NSCollectionLayoutDimension { get }
```

## See Also

### Getting the width and height

- [heightDimension](appkit/nscollectionlayoutsize/heightdimension.md)