The VAULT.
Money Heist Season 3, Episode 2
The VAULT is open.
Money Heist Season 1, Episode 1
You're in the VAULT of the Bank of Spain.
Money Heist Season 3, Episode 3
The VAULT is completely airtight.
Money Heist Season 3, Episode 2
Then, it goes to the VAULT.
Money Heist Season 3, Episode 5