This is a currency note from the Bank of the United States and is not an obligation of the United States government. The Treasury Department did not issue notes intended for circulation as currency until 1862.
The grommet panel must be a minimum of 70 inches wide, between the side hem seams, to provide just slightly more than 1.5 times fullness on the 40-inch space.
If it's got wood jambs, it's sized for a standard door. The readily available, standard bifold door is usually 80 inches tall. The width of the opening can vary from 24 inches to 72 inches, with individual panels or doors divided equally. For example, a 72-inch bifold door -- or 6-0 -- typically consists of four 18-inch-wide panels or doors.