Vault access panel

The Vault access panel is an architectural feature used in Vault-Tec Vaults. An access panel is a thin square metal panel with a handle. The front of the panel is marked by a raised X with a protruding center protuberance. The panel's back is smooth. In a corridor, two of these panels are arranged vertically between concrete wall slabs. Concealed behind the access panels, there is additional piping and the corrugated steel skin of the Vault's exterior. The Maintenance Department routinely maintain these pipes. Access panels are located in all corridor sections.

Vault 101
On July 13, 2268, near the Cafeteria, the maintenance technician Stanley Armstrong removes two access panels from a wall section. He is doing routine maintenance on the pipes.

On August 3, 2274, Mr. Armstrong leaves two access panels with Andy near a vent covering as he visits the clinic.