| # | Concept | Culture | Statement | Freq. |
|---|---|---|---|---|
| 1 | letter slot | United Kingdom | Letter slots are commonly located on the front doors of houses for mail delivery. | 1 |
| 2 | letter slot | United Kingdom | Commonly found in residential doors for mail delivery | 1 |
| 3 | letter slot | United Kingdom | Traditionally located on the front door to receive mail, often used in older houses | 1 |
| 4 | letter slot | United Kingdom | Letter slots are less common, with the preferred method of mail delivery being through a mailbox or letterbox located outside the home. | 1 |