Our smallest panel width is 200mm and widest is 750mm, although with larger louver panels we do sometimes go wider but void warp warranty with your permission. Generally a window looks best with 4 panels, two opening as pairs either way. A 3 window bay, however, will usually have 2 panels on the smaller side windows and 4 in the centre. All panels will open away from the middle.

There are as many exceptions as there are norms. For instance, a long window with 3 panes of glass, i.e.; 1800mm wide and 1000mm high, would have 6 panels; three folding either way or if you are only going to open them to clean the windows you could easily have just 3 panels.

A lot of the time you will have to consider where the panels are going to fold back to and if there is enough room for this to happen. This is also true where you are fitting inside the reveal next to the window and you will not want the shutters, when open, to protrude into the room too much.

Openings over 2800 generally need a top track, even if not using a top track at this width try to use a light panel such as Stratford or Worcester and fit within a 4 sided frame.

For partitioning or for large windows where tracking is needed at the top to suspend the panels you will really need an even number of panels or they will look odd and not hang from the track properly. Ideally 8 panels or 12 panels for very large openings is best although quite often it is wise to hang even 6 panels from tracking if they are quite large. With the heavier Warwick shutter this is clearly an option to be considered. We do not charge for tracking, it comes in the square metre price for the opening.

In summary, the window will normally dictate the number of panels. If the window is split into two halves you would either have 2 or 4 panels and it follows that if it is three panes then three or six panels will suffice. The vertical dividers of the windows are where the vertical stiles of the shutters should ideally be.