Design, concept, installation instructions display form positive! Height adjustability poor quality realized (rectangular profile match between Standfüße- Pos.4 2 u.3 guide columns of the table top - too big,> 3mm), thereby optical obliquity (side view) or stability disadvantage, especially in children (shake table)! - Self-made is the subject of rescue, but is not in the sense of the buyer! required- -konstruktive revision