I also just got a picture of 20 gridseeds running in a 2U case with no fans! (on the gridseeds) the standard chassis fans did all the work.
Waiting on permission and I'll repost.
Yeah, I was thinking about that. If you would put them on their side, so the airflow can get through the fins easily, you could probably put 4 rows of 15 miners each or so in a 2U case with some high speed fans
