What would you lot consider is a 'small width' , 'Medium width' and 'large width' plank to be in mm? For example, i walk in your shop and i ask for a medium width solid wood plank. What width of plank would you show me ? would you show me a 90mm plank? a 160mm wide plank? Can answers be a range please . like medium = 90 - 160 mm for example.