doerrkarm, som funktionellt ansluter sig till vid installering av elledningar anvaenda installationslister sao, at elledningarna kan dragas omkring i i i mellanvaegg befintlig doerroeppning utan aendring av denna

摘要

A door frame 6 is designed for use with skirting boards for receiving electrical conductors so as to allow the conductors 11, 12 to skirt an opening 5 in a partition 4. The door frame consists of portions of hollow metal section having a slot 10 communicating with its interior 13, the slot being along the edge facing into the opening 5. IMAGE