| ||For an overview of vault doors in the Fallout series, see Vault door.|
|The following is based on Fallout Shelter and some details might contradict canon.|
The vault door can hold up to two dwellers as an initial defense. It can be upgraded two times to strengthen the door against raider attacks.
- Upgrade 1: 500 bottle caps
- Upgrade 2: 2000 bottle caps
The door is a fixed entry point to your vault and can neither be deleted, (re)built nor merged.
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