| ||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 cannot be deleted, (re)built, or merged.
This article is too short to provide more than rudimentary information about the subject. You can help Nukapedia by expanding it.