The inverted box pleat basically forms an inverted pleat at the front of the curtain, with all the extra fabric within the pleat contained behind. It’s a less fussy look than most other pleats, and often a great alternative to s-folds if floor space is a problem or the fabric doesn’t have a very soft handle. In other words, you can use rather stiff fabrics very successfully with box pleats.
One of the advantages of the box pleat is that you can control the fullness, that is, you can control the amount of fabric you need. Box pleats can still look good if less fullness is used, thus saving money on extra drops of fabric. As a matter of fact, box pleats definitely DO NOT look better if more fabric is used; extra fullness can make the curtain look clunky and less
Geometric, damask, cameo and other regular patterns look spectacular when they are pleated ‘to