Measure from the right side, at the bottom, to your mark and record on the worksheet.
Add that amount to 20 inches and record it on the worksheet as well.
In this example, the measurement from the right side at the bottom is 16 inches. Added to 20 inches gives a total measurement for the bottom width of 36 inches.
Note that in this example the top and bottom widths are not exactly the same. The Plissé will easily adapt to this opening, which is 3/8″ larger at the top than the bottom.Bookmark the permalink.