20" Interior french doors
Are you sure they're 20" or is that a typo?? (maybe 30"??) Even bath and closet doors are at least 24", with the exception of a linen closet which may be 18" (at least mine is). As Bill said, they're definitely NOT a stock size and won't be "inexpensive". If you decide to special order, as Bill said, go through a lumber yard not a big box store. You'll get a better price and quicker turnaround time......
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