Four big air ventilation fans for hvac

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Size: 7800px × 4000px
Photo credit: © Nikola Obradovic / Alamy / Afripics
License: Royalty Free
Model Released: No

Keywords: air, big, building, conditioning, cooling, duct, ducting, fan, flow, heating, hvac, industrial, industry, large, metal, pipe, quality, silver, stainless, steel, system, vent, ventilation, venting