| Filterdauer | Nominativ, Singular | nominative case, singular | |
| Filterdauere | Genitiv, Singular | genitive case, singular | |
| Filterdaueren | Dativ, Singular | dative case, singular | |
| Filterdauer(e)s | Akkusativ, Singular | accusative case, singular | |
| Filterdauerer | Nominativ, Plural | nominative case, plural | |
| Filterdauerern | Genitiv, Plural | genitive case, plural | |
| Filterdauern | Dativ, Plural | dative case, plural |