detail of a large vent pipe coming out of an underground building

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Size: 6336px × 6336px
Location: Sofia, Bulgaria
Photo credit: © Sergio Delle Vedove / Alamy / Afripics
License: Royalty Free
Model Released: No

Keywords: air, architecture, background, building, circulation, city, conditioner, conditioning, construction, cool, cooling, duct, engineering, equipment, fan, green, heat, industrial, manufacture, metal, metallic, pipe, pipeline, pipes, plant, roof, sky, smoke, steel, structure, system, systems, technology, top, tube, turbine, vent, ventilation, ventilator