| Subject | English | German |
| nat.res. | clean air side | Reinluftseite (side including the outlet of clean air) |
| auto. | clean side | Reinseite (filter, Filter) |
| coal. | clean side cover | Laufdeckschicht |
| tech., industr., construct. | left side of a waste cleaner | linke Seite eines Abfallreinigers |
| tech., industr., construct. | right side of a waste cleaner | rechte Seite eines Abfallreinigers |
| construct. | to lay bricks from the clean side | vor die Hand mauern |