| # | Concept | Culture | Statement | Freq. |
|---|---|---|---|---|
| 1 | air purifier | United States | Common household item in areas with high pollution or allergies | 1 |
| 2 | vent brush | US | Commonly used to clean dust and debris from air vents and ducts in homes and cars | 1 |
| 3 | vent brush | United States | Used for cleaning dust and debris from air vents and ducts in homes and buildings. | 1 |
| 4 | vent brush | United States | Commonly used for cleaning dust and debris from air vents in homes and vehicles. | 1 |