It should be noted that the dimensions of the shelf apply plus the supernatant cover plate, but it is nowhere.
Here, the "correct" dimensions of the shelf without ceiling panel:
Width 41.5 cm instead of 45.5 cm.
Height 48,0 cm 50,5 cm instead.
Depth 14.5 cm instead of 17 cm.
Because of the faulty item description I can give only 2 stars because I would not have bought the shelf with the dimensions specified correctly.