Sentiotec ALASKA MINI INFRA+ Instructions De Montage Et Mode D'emploi page 10

Instructions for installation and use
Installing corner posts with wall elements
Pre-assemble the wall elements with the corner posts on the floor and
then place these posts on the base frame.
Insert the corner post on the wall elements, moving it downwards. When doing
this, ensure that the Multiclips are correctly aligned (see below). The corner post
must be flush with the wall elements.
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Multiclip