| # | Concept | Culture | Statement | Freq. |
|---|---|---|---|---|
| 1 | vent brush | Japan | In Japan, the vent brush is less commonly used due to widespread centralized air conditioning and different ventilation methods. | 4 |
| 2 | vent brush | United States | The vent brush is commonly used in the United States to clean dust and debris from air vents and ducts in homes and vehicles. | 4 |
| 3 | vent brush | Asian countries | In Asian countries, vent brushes are not commonly used in households due to prevalent air conditioning and for cleaning vehicle air vents. | 3 |