When ordering your valance, we suggest planning to mount your valance approximately 1-1/2" above window opening or undertreatment. Take width measurement of opening, or outside mounted treatment that the valance will be mounted over, and add at least 1" width to provide operating clearance. When mounting over another window treatment, order clearance depth at least 1" greater than the "flush mount depth" of the undertreatment.
Clearance depth refers to the amount of space between your wall and the back of your valance. This information is important when ordering valances to be mounted over other window treatments or to clear moulding. The available clearance varies by valance style. See below for a breakdown of clearance availability by style.
Both the back and top, also known as the dust cap, of your fabric top treatment comes encased in a standard liner to keep the interior free of dust. Consider a fabric-covereddust cap if the top of your cornice can be seen from above, like when descending stairs.