| 摘要 |
A frame sleeve (1) for attaching window and door frames in openings comprises an externally threaded portion (2) and is characterized in that it is provided with a portion (3) with an external wrench grip and the externally threaded portion (2) has an internal wrench grip receiving socket in its tree end, into which the external wrench grip (3) of another frame sleeve can fit in a form-locking way. <IMAGE> |
