On my job, we have several customers, where a big rackmounted firewall, is way too big for their needs, therefore they buy smaller routers, in ex. the Sophos SG115 and XG 115 appliances.
Theese appliances can also be ordered at Sophos with rackmount kits as here:
Sophos Rackmount Kit Mounting Instructions XG 105(w)/115(w) Rev. 3
But unfortunately, ethernet ports, console port and usb port, are located on the back of the device, and are not easy to reach, in case that could be needed.
Then I found the rackmount kit from Rackmount.IT, they have a brilliant product, that matches exactly my needs:
Here I have mounted two Sophos XG 115, that run in HA:
I am very happy about theese kits, and it will surely not be the last time, I will use them 😉