Many times, you may have a window treatment that needs a Kirsch Superfine or Empire Traverse rod, but also has sheers or a top treatment that will need to go on a separate rod.
Use Valance rods for a top treatment that may be hung above a traverse rod or on it's own. Or, use a Utility rod for a sheer style drapery to hang below a valance or under a traverse rod.
You may also use a Utility rod beneath a Decorative Traverse Rod like Kirsch Studio Coordinates.