@stefano We ended up cutting some wide cable pipes at an angle and duct taping it to the router so we covered the air inlet with one pipe and the air exhaust with another pipe. The other end of the ducts were led to the outside of the rack, lifted off the ground and pointed downwards to avoid water. That provided new fresh air and a way to get rid of the hot air. We also fashioned some shadow with a sheet of plywood. The year after we put some smaller equipment in

@stefano since the racks were designed for outdoor use they were water tight, only had small holes in the bottom for cables and very limited infrastructure for air venting like downward facing holes in the “roof”. They could supposedly float.

@stefano 10+ years ago i started volunteering at a festival. Everything was new that year including the small outdoor racks for the area field routers (Juniper MX80). They barely fit but we managed. The racks were left in the sun in the summer. It was only when we enabled Observium (LibreNMS predecessor) that graphs almost everything it gets from SNMP that we discovered the inlet temperature was getting close to 80 degrees C. #monitorallthethings