Search “firewall + 1U” on Aliexpress/Alibaba. Or, hear me out, get a NanoPI R4S and just mount it to the side of the enclosure, get rid of the shelf altogether.

Search “firewall + 1U” on Aliexpress/Alibaba. Or, hear me out, get a NanoPI R4S and just mount it to the side of the enclosure, get rid of the shelf altogether. No shelf no problem. Next level aesthetics ;)