Vault vent covering

The  is an architectural feature used in the Vault-Tec Vaults for air circulation and vent concealment. The covering conceals a horizontal or vertical vent. The covering is a large metal circle with sloping sides mounted to a wall by eight bolts. Five slats, angled to the floor, are placed within a covering. The coverings are located in corridors and rooms. Some of the coverings are placed in recessed sections of corridors for the free, unimpeded movement of residents. The coverings are a component of the life support system.