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.
Make sure you have enough fabric for a double hem. Standard curtain panels have a 1Â½ inch (3.81 centimeters) wide hem on each side. The hem is folded twice, on both sides, so each panel will need to be 6 inches (15.24 centimeters) wider than you want them to be.