How many grommets are in a panel? An average drapery will have 8 grommets per width, so dividing by 7 is a good place to start! One tip for making professional quality grommet draperies is to place seams in the space behind a grommet so that is behind the rod.
How many grommet panels do I need? Make sure that the fullness of your curtains is about twice the width of the window. So if your window is 50” wide, you will want 100” of panel curtains. It is important to keep your window balanced. So if you put two panels on one side, then put two panels on the other side as well.