air duct

American  

noun

1. an enclosure, usually of sheet metal, that conducts heated or conditioned air.

---

Etymology

Origin of air duct

First recorded in 1865–70

Example Sentences

Every room in a house, except for kitchens and bathrooms, should have a return air duct as well as one or more supply ducts.

From Seattle Times

Concerning levels of the narcotic were found in the air ducts connected to six of the library’s restrooms, according to an announcement on the library’s website.

From Washington Times

It emphasizes the lack of transparency from the Chinese government and putative biosecurity lapses at the WIV labs with equipment such as air ducts.

From Science Magazine

Wedged between a hair salon and an air duct business, the Baziks manage to make a small space feel airy.

From Los Angeles Times

Ultraviolet germicidal irradiation, the placement of UV-C lamps in the air ducts or above dropped ceilings, is extremely effective at inactivating the coronavirus and influenza viruses and even tuberculosis bacteria.

From Washington Post