At 140mm, the face is considerably broader than the other Bevel profiles listed here. If you want the moulding to have some presence, this is the size to look at.
The 140mm height makes it an obvious option to consider where taller skirting suits the proportions of the room.
It isn't just wide. The 18mm thickness gives the board enough depth to avoid looking overly flat against the wall.
Across a 140mm face, that angled detail helps break up the surface and gives the finished moulding a more considered appearance.
Wide mouldings can look excellent, but room proportions matter. Check door clearances, cabinetry, existing architraves and other junctions before ordering a full-house quantity.