
In the wall of the corridor built-in Cabinet or pantry can be equipped with a pull-out-push-step from metal pipes. They will not interfere with and, if necessary, easily POPs out, allowing access for example to the mezzanine.
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But not to throw out it! And involuntarily thought creeps in to make it a foldable frame. The same as, say, the "Kama". I reviewed the literature on the subject (including the...