the baseboard 5 of the aforesaid panel attachment frame it is easy to employ such fastening elements and bolts and nuts but a boltless assembly structure can also be adopted in which clinching tabs and corresponding arresting holes are used either of these methods may be used or a combination of both the panels 2 and 3 which are attached to the panel attachment frame 4 constitute the surfaces that is to say the cosmetic surfaces of the partition these are made into boards by using a cosmetic material with a base material for support and these are attached to the attachment frame 4 by an appropriate joining means such as noted above the unit 1d formed as noted above is made into the prescribed partition by positioning the baseboard 5 on the carpet of the floor and an appropriate cable 7 is wired into the space inside the baseboard 5 additionally inside the baseboard main member 5a an attachment fitting supports the floor cable riser and aids in connecting that cable with the cable 7 wired inside the baseboard also opening 10 is formed in the baseboard main member 5a to admit the cable riser the invention is provided with a terminal plate 8 for the purpose of supporting the floor cable riser if the floor.