Air

Near the crew entrance you will find the filter room with 4 filters. In peace time the doors are open and air is coming in naturally.

In the Maginot line Fermont are two different air systems

- Fresh air (green tube) in normal time fresh air comes in from the crew entrance with ventilators
- Gas air (red tube) in war time all the doors are closed and if there is gas in the air the air is filtered in the filter room

This filter room is only for the barracks and the power plant, each block has his own filters.