The MyElectronics 19 inch Rack Mount 1U is designed specifically for holding 1-4 Raspberry Pi units securely in a server rack. 

It has been used with Raspberry Pi 4 boards. There was enough space when installed to add POE hat to run through a single network cable and still leave air to circulate

This product from MyElectronics ensures that your Raspberry Pi boards are neatly organised and out of the way, making it easier to manage and work on them efficiently. 

Includes screws to hold the Raspberry Pi to the mount. A rack mount kit will be required

Approximately £85 brand new