![](http://www.alamy.com/thumbs/6/4CD717DB-D8C2-40E8-B632-54663205341D/F3JXRF.jpg)
Two big ventilation pipes
Size: 5760px × 3840px
Photo credit: © MB Light Vision / Alamy / Afripics
License: Royalty Free
Model Released: No
Keywords: architecture, background, big, blank, building, concrete, construction, empty, factory, industrial, industry, metal, metallic, pipes, space, steel, urban, ventilation, wall