I also like the cardboard doorway setup. I thought about doing something similar at my place but i got lazy and didn't look for a place to buy that large of a piece.
I also have a couple of the bitcoin miners instead of the Avalon's . Bitmain comes with the controller but you have to purchase the power supply.
You are right about the noise, i still need to figure out what to do about that at my place. Its in a separate room so well see.
I added 4 more units since my last post and got another one on the way. Will update once that one is installed.
The setup is definitely noisy, you can hear it across the warehouse (15000 sqf).
I had a bunch of those cardboard pieces sitting in storage, so that helped
You haven't found any dust issues with it sitting in a warehouse? Compared to a household?
Perhaps a good time to invest in some dust filtration blankets (which also acts as noise cancellation), to replace those cardboard boxes? I've seen some data centers in the past use some sort of material for this application. Not sure where to source it from.