The assembly is very easy (instructions makes it even easier).
There are 2 different holders in the delivery. Depending on the door thickness, you can choose here.
However, I must also say that I would make is not simply larger bottles (oil, vinegar) on the shelf. If one is something thoughtless and the door opens peppy, which can already be pretty close.
I have found in this case, just in front of small vessels, so that I can also OIL / vinegar etc in the shelf pack and I have to worry about anything!
Because this solution is really ideal for me there despite the small criticism perfect score :-)