During the pre-titles music (Congregation by Low) the lift that carries the coders into the main DEVS area is shown next to the platform at the entrance with the fractals on the walls. Both sets of doors (near and far) and the platform doors (near and far) are shown to open together.
The lift is then seen to float away from the entrance platform to the other side with these doors still open. This would mean the near perfect vacuum surrounding the DEVS "Faraday cage" would be lost as atmospheric air rushes in.