There are four methods of installation. How you measure is based on the depth of the window and the style (plantation or traditional) of shutter you select. You do NOT need to figure individual panel sizes or make allowances for fit.
Note: There is a minimum order size of 10 square feet (1440 square inches).

The shutters attach directly to the window jamb using butt hinges that are mortised into the hanging stiles of the shutter. This is generally the preferred installation method for window opening with enough depth to accommodate the shutters and still permit the louvers to rotate to the full open position. Window openings should be nearly square with measurements that do not vary more than 3/16". Otherwise, Installation Method INH or an outside method is suggested.

The shutters are attached to a rear hang strip with adjustable offset hinges. The hang strip is attached to the window jamb with screws and to the shutter panel with an L-shaped hinge. This method of installation allows for more adjustment in window openings that are not square, yet are deep enough to accommodate the shutters with the hang strip and still permit the louvers to rotate to the full open position. If depth is a problem, the hang strip and shutters may be moved out towards the room.

This method is used almost exclusively for full height shutter units. A frame surrounds the shutters on the top and both sides (and on the bottom if there is no window sill). The frame attaches slightly beyond the window opening either on the wall (FOW) or on the face of the existing trim (FOT). The installation method is typically used when an inside installation is not possible or the opening is out of square.

This method is used almost exclusively for café type shutter units. A hang strip attaches to each side of the shutter unit and attaches slightly beyond the window opening on either the wall (HOW) or face of the existing trim (HOT). The installation method is typically used when an inside installation is not possible or the opening is out of square.