However, it concerns with the specified dimensions (36 x 30 x 8 cm) to the external dimensions.
Usable internal size:
below in cm = approx 30 x 26.5 x 7.5
top in cm = approx 31 x 27.5 x 7.5
The outer edge is bent final except at the corners a little sharp and should there - be careful handled - with small and delicate fingers. This could be avoided if the edge would be bent slightly, so that the sharp edge is no longer reached by the fingers.