- two-part, consisting of a housing and a mineral fibreboard cover
- all-round groove indicates the maximum opening size
- two-part, consisting of a housing and a mineral fibreboard cover
- all-round groove indicates the maximum opening size
- two-part, consisting of a housing and a mineral fibreboard cover
- all-round groove indicates the maximum opening size
- two-part, consisting of a housing and a mineral fibreboard cover
- all-round groove indicates the maximum opening size
- two-part, consisting of a housing and a mineral fibreboard cover
- all-round groove indicates the maximum opening size
- two-part, consisting of a housing and a mineral fibreboard cover
- all-round groove indicates the maximum opening size