The blade sizes are (2.5") 63.5mm and (3.5")88.9 mm or (4.5")114.3mm with either stainless stapled centre control bar or Aluminium hidden controls at rear or an aluminium face control on the side.PVC is an important addition to the shutter materials collection,offering versatility between the other options timber and aluminium.The painted finish makes it hard to distinguish between a basswood or plantation shutter which enables you to mix and match in the home without noticing, because they are an exterior or interior shutter,PVC are an excellent choice in a bathroom which has a high humidity or a wet or damp environment.