https://www.doitgarden.ch/de/p/657421203140/scheurich-keramik-uebertopf Unfortunately I can't find the article here, only on the do-it website.... it says diameter 31 cm, then width 40 cm, aren't diameter and width the same? How is this meant? I don't want video advice but simply a normal answer from Migros..... thanks! Or does anyone know this planter?