The industrial air ventilation system with supply fan in underground bomb shelter for a few thousand people

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Size: 5476px × 3463px
Photo credit: © Vsevolod Chuvanov / Alamy / Afripics
License: Royalty Free
Model Released: No

Keywords: air, armored, asylum, big, black, bunker, cold, defense, door, duct, entrance, fallout, fan, hermetically, industrial, iron, pipe, protection, protective, refuge, room, secure, security, shelter, structure, supply, underground, valve, ventilation, war, work, yellow