head sail luff and leach measurements

Does anyone know the correct measurments for a roller furling163% and 155% leach and luff? Is 155 the current PHRF choice or is it 150%? DOes the class or Phrf regulate how much of the sail gets removed to roll properly or do they only care about maximum dimension?
thanks,
clint

Phrf only cares about max size ( i.e. 155 )
I just send my 155 to North and they knew the dimesions to cut away for the harken furler... ( different furlers different dimensions )

Thor