Vault vent covering

The Vault vent is a type of vent. It is a large circular covering with five slats. Vault residents use these vents for circulating air. Vault vents are located in every corridor segment.

They were supplied to the Vaults prior to the Great War of 2077.

Vault 101
On August 3, 2274, Andy can be seen repairing a Vault vent.