File:Ventilation ductwork.jpg

Ventilation_ductwork.jpg(640 × 426 pixels, file size: 47 KB, MIME type: image/jpeg)

mechanical ventilation ductwork. Image source https://pixabay.com/en/building-equipment-ventilation-ducts-651944/

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current10:25, 28 February 2017Thumbnail for version as of 10:25, 28 February 2017640 × 426 (47 KB)Designing Buildings (Talk | contribs) (mechanical ventilation ductwork. Image source https://pixabay.com/en/building-equipment-ventilation-ducts-651944/)

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