Caution: Two different shelf types come under the same designation!

First, the positive: The shelves were delivered very quickly in any case. However, the postman groaned under the 27 kg Individual weight.
Now the real problem:
I ordered for my cellar total of 9 racks of this type here on Amazon.
The first 5 shelves came from the Market merchants "Oxid7 GmbH". The design of these shelves was a bit fiddly but no problem. The structure is completed in approximately 20-25 minutes per shelf. As far as I could not understand the individual negative reviews on Amazon.

Therefore, I have - ordered more shelves - because of the good experience.
And now came the surprise. This time the delivery came from the Market merchants "nol-trading". These shelves are designed completely different. Instead of 2 brackets per side 4 bracket must now be put into the awkward straps. Since the parts are working quite dirty, this can only be achieved with great effort and requires constant correction bending.
The construction of these racks is almost twice as long time and a lot more complicated.
The stability of both types of shelves is ok for the price.
However, the variant of the dealer "nol-trading" is not recommended due to the very complicated installation and sloppy workmanship. In addition, here are the sidebars wider, with the result that not the full amount is available per shelf. Another minus.
After both versions are sold here at Amazon under the same Product name, I can only comment with an asterisk the item is sold.