How wide should curtains be? Panel width are measured differently based on the heading styles: French pleat and Tailored pleat style panels have 2x to 2.5x fullness built-in, so if you are ordering French pleated or Tailored pleat heading style, you should order the panels that fit your window(rod) width. They will cover your window with a nice fullness. Ripple fold style curtains also have fullness built-in, the total coverage width is going to be track width. You can order Ripple fold…