One star, because the shelf does not fit, although it according to the description variable between 175 - should be 275 meters high ceilings construction. No matter how I put it together for my ceiling height of ca.2.20 m can it not be built! Not very customer friendly is the company that one should bear the shipping charges for the complaint itself and the information in the e-mail is what is so clear in use but may apply evtl.eine impairment also to build up the goods.