Bi-fold interior shutters that accordion
"Bifold shutters" (or, "bi-fold shutters") is a term sometimes used to describe a four-panel shutter unit. Bifold, or bi-fold, is not the best term to describe the desired shutter unit. The best way to define a shutter unit is to specify the number of panels across followed by the fold pattern and number of tiers. So, the better way to describe a bi-fold shutter would be a four-panel shutter unit with two panels opening left and two panels opening right. The shutter unit can be either one or two tiers.
Traditionally in a interior four-panel bi-fold shutter unit two shutter panels hinge together and hinge to the left and open to the left. The panels fold together and should rest against the wall on the left side. Then, two shutter panels hinge together and hinge to the right and open to the right. The panels fold together and should rest against the wall on the right side. A panel is a single shutter consisting of two side stiles, a top and bottom rail, an optional divider rail, louvers, and a tilt bar.
The term bi-fold (or, bifold) also could describe just two panels across, where two shutter panels hinge together and open to the left or right side of the window.
A second term that is widely used is "accordion shutters". Some people even combine phrases, requesting bifold shutters that accordion. Again, it is best to describe the number of panels across and the fold pattern when communicating with a shutter professional.
Most shutter professionals will help you clarify the shutter unit which you desire. However, following these guidelines and avoiding the terms "bifold shutters", "bi-fold shutters", and "accordion shutters" will help simplify the process.
Horizon Interior Shutters offers custom interior bi-fold wood plantation and traditional style shutters.