Yeah those are onda mobos plus cases that are on alibaba. Really nice cases with overkill 3700rpm fans. Keeps my 1070ti minis at 60 degrees.
That shirt will be drying very very quickly, that's for sure! 
How much are you paying in rent for this type of room, if you don't mind sharing? How many rigs will you stack in there?
54 rigs will be stacked there, 432 cards. 88x 1050ti are coming which takes up 11 rig space. The remaining space can be filled with 150-180W tdp gpu rigs like 1070tis.
Rent is $250 USD a month.
The fans are so powerful that the clothing rack will topple over! I wish the rig cases have the option of fans between 2000-3000rpm.
noise is an issue for me too, but i have cameras and and alarm system clearly visible
i do intend to install sound proofing on my garage door
It's very low profile. The noise cannot be heard outside the unit, it's 70 decibels inside but well contained. For safety there's 3 layer of protection, gate to enter the building, door to enter the unit, an extra metal gate with CCTV behind. Worst case I make a 20 min drive to the farm. It's also in a safe place with traffic.