Hi Niklas, >Almost correct, it should be 200 x 160 for Double Euro :) No, double Euro is slightly larger (actually 233.5mm*160mm) than two single Euros. This is because single Euros fit into 19" 3U pcb carriers and double Euros fit into 6U pcb carriers. There are even larger Euro formats, 100mm*220mm and 233.5mm*220mm. Regards, Ingo