Classic Shutter Styles
A single pane allows light to enter and the view to be more open; each pane occupies the full width of the window, so its size can interfere with furniture placement if you want to open the shutter all the way.
Two shutter panels is a classic design. Because the pair of shutters splits to open, the panels are narrower and less likely to interfere with furniture. Double-paned shutters cover more window area and reduce the view. The louvers can close tighter, so they block more light.
More shutter options
Shutters of 2 or more adjoining windows can be covered with a single frame divided into one section per window with a vertical T-shaped pillar. The configuration of this shutter can be 3 single panels, 1 double panels and 1 single or 3 double panels.
Double Windows Panels
Shutters in 2 or more adjoining windows can be covered with a single frame divided into one section per window with a vertical T-pillar. Usually the configuration is 2 double panes.
Double Panels Bi-Fold
Bi-fold shutters are constructed with 4 panels, the panels are hinged to each other, rather than to a T-post.
Café shutters are constructed to cover the lower half of a window. Shutters are popular on tall windows and in homes with a classic interior design style.
Double Leaf Panels
Double-leaf shutters, however, are actually two separate panels stacked on top of each other. This allows the upper panels to open against the wall while the lower panels remain in place.