---
title: kernelWidth
framework: metalperformanceshaders
role: symbol
role_heading: Instance Property
path: metalperformanceshaders/mpsimagebox/kernelwidth
---

# kernelWidth

The width of the filter window. Must be an odd number.

## Declaration

```swift
var kernelWidth: Int { get }
```

## See Also

### Properties

- [kernelHeight](metalperformanceshaders/mpsimagebox/kernelheight.md)