Where can i get thoose huge safety deposit box safes- like at the bank?

Hi, im a first time home buyer, well builder- im custom building my home. In my blueprints i wanted to add a safe room in the east side of my house. I want to build thoose huge safe's like you see at banks with safety deposit box's in them, with the huge steel door. And insulated walls, etc.

I plan to add inidivular gun safes, storage safes, etc inside of that.

So my question is: Where can i buy these systems with the air, double steel doors, and insulated walls?

Also, I was wondering i went to a bank to tour one today and it had a "pull for air" lever on the wall, so i was wondering what does that do?

P.S. My contractors and builders dont even know where to find one.








What is your job?!
The pull for air lever - sometimes they can have a compressed air thing so that if criminals do work out the code, the door will be harder to open so they have to work out the code for that aswell.