Filter ventilation unit, Bunker-museo (Leningrad)

Filter ventilation unit

Filter ventilation unit

This device creates an air overpressure inside of the bunker with purified in the filters air, so that smoke and gas from the outside do not get inside. The picture shows banks of absorber filters as well as a drive of one man-force.

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Alex Goss Photography - Фотографии городов и стран, битв и сражений, разного и прочего...