![London underground ventilation shaft blending in with surrounding buildings University Hospital built Victorian era onto street Stock Photo - Alamy London underground ventilation shaft blending in with surrounding buildings University Hospital built Victorian era onto street Stock Photo - Alamy](https://c8.alamy.com/comp/CP8GDG/london-underground-ventilation-shaft-blending-in-with-surrounding-CP8GDG.jpg)
London underground ventilation shaft blending in with surrounding buildings University Hospital built Victorian era onto street Stock Photo - Alamy
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House with a ventilation shaft in Jeddah, Plans and Section sketch,... | Download Scientific Diagram
![Steel Air Ventilation Shafts or Ventilation System at the Interior of a Building Stock Photo - Image of aluminium, interior: 232983330 Steel Air Ventilation Shafts or Ventilation System at the Interior of a Building Stock Photo - Image of aluminium, interior: 232983330](https://thumbs.dreamstime.com/z/steel-air-ventilation-shafts-ventilation-system-interior-building-steel-air-ventilation-shafts-ventilation-232983330.jpg)
Steel Air Ventilation Shafts or Ventilation System at the Interior of a Building Stock Photo - Image of aluminium, interior: 232983330
![File:Ventilation shaft of Geologicheskaya metro station (Венткиоск станции Геологическая) (6969304453).jpg - Wikimedia Commons File:Ventilation shaft of Geologicheskaya metro station (Венткиоск станции Геологическая) (6969304453).jpg - Wikimedia Commons](https://upload.wikimedia.org/wikipedia/commons/d/d7/Ventilation_shaft_of_Geologicheskaya_metro_station_%28%D0%92%D0%B5%D0%BD%D1%82%D0%BA%D0%B8%D0%BE%D1%81%D0%BA_%D1%81%D1%82%D0%B0%D0%BD%D1%86%D0%B8%D0%B8_%D0%93%D0%B5%D0%BE%D0%BB%D0%BE%D0%B3%D0%B8%D1%87%D0%B5%D1%81%D0%BA%D0%B0%D1%8F%29_%286969304453%29.jpg)
File:Ventilation shaft of Geologicheskaya metro station (Венткиоск станции Геологическая) (6969304453).jpg - Wikimedia Commons
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