| # | Concept | Culture | Statement | Freq. |
|---|---|---|---|---|
| 1 | ventilation shaft | Eastern countries | Ventilation shafts are designed to promote airflow and remove excess heat and humidity in order to keep buildings cool and prevent mold and moisture buildup. | 1 |
| 2 | ventilation shaft | eastern countries | Ventilation shafts are often designed to accommodate feng shui principles, ensuring the flow of positive energy and air circulation within a building. | 1 |