Outside Mount
Shutters are fixed onto the wall outside of the recess opening as shown in diagrams A, B and C.
  
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Inside Mount
Shutters are installed on the inside of the recess opening as shown in diagrams D, E and F. This requires sufficient depth for slat clearance (the bigger the slat, the bigger the depth required) and clearance for handles must also be taken into account. Shutters will fold back against the inside of the recess if mounted as per D and E (although they may still protrude further than the recess, depending on recess depth and size of panels). If mounted as per option F, shutters will fold back against the walls on either side of the window.
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