---
title: CWChannelWidth.width40MHz
framework: corewlan
role: symbol
role_heading: Case
path: corewlan/cwchannelwidth/width40mhz
---

# CWChannelWidth.width40MHz

40MHz channel width.

## Declaration

```swift
case width40MHz
```

## See Also

### Constants

- [CWChannelWidth.widthUnknown](corewlan/cwchannelwidth/widthunknown.md)
- [CWChannelWidth.width20MHz](corewlan/cwchannelwidth/width20mhz.md)
- [CWChannelWidth.width80MHz](corewlan/cwchannelwidth/width80mhz.md)
- [CWChannelWidth.width160MHz](corewlan/cwchannelwidth/width160mhz.md)