What Is a Window Sill?
A window sill is the ledge at the bottom of a window that projects further into the room than the other sides of the opening. It is different from the window recess, although a window can have both.
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Overview
Inspect the window from the side. If the bottom edge extends further into the room than the top and sides, treat it as a projecting sill when planning your plantation shutters.
The sill matters because the bottom of the shutter frame may need to finish on top of it. As an example, a frame that overlaps the side and top edges of the opening can’t merely proceed down over a sill that projects forward.
Identify the sill before capturing your final dimensions so the correct bottom-frame arrangement can be allowed for.
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