Wiktionary
n. (air duct English)
Usage examples of "air ducts".
The easiest and cheapest way to provide for that would be with wide air ducts.
He had a mental image of somebody opening a vent and seeing his skull looking out at them, his dead body completely dried up in the warm wind of the air ducts where he starved to death or died of thirst trying to get out of the vents.
If the Ship were a person, the air ducts would be the circulatory system.
He was zipping through the air ducts, and anyway it would be a very speedy Zardalu who could even get near him in his condition.
He decided that if he ever had a chance to design air ducts, not only would he make them large enough to walk comfortably through, he'd make sure they were well lit, clearly marked with road maps, and had an occasional water fountain.