Air-Filtration unit from a German bunker WWII3D Model
Air-Filtration unit from a German bunker WWII
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More model informationMany German bunkers from WWII had these anti-gas air filtration systems installed that had to manually be operated to pump outside air through an air filter in to the bunker. The round pressure-valves in the walls can be found in most bunkers. These are called “uberdruckventil” and that basically means over-pressure-valve and would automatically let air out in case of overpressure inside the bunker.
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