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wall stack section /ˈwɔːl ˈstak ˈsɛkʃən/ n

中文：竖向风管

中文 · 竖向风管Español · conducto de distribución verticalFrançais · conduit de distribution vertical
Meaning：Vertical duct carrying hot air upward toward the registers on the upper floors.
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Found in these illustrated scenes（1）

Forced warm air system

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