As a note, one of the two black walkways is a bit shorter than the other. It's not uncommon however, to find two of the same length in original packaging. Whether this was a mistake or a deliberate simplification is anybody's guess right now.
Box size
Length
Width
Height
18.6 cm
14 cm
4.8 cm
7 1/4 in
5 1/2 in
1 7/8 in