Abstract: Disclosed is a window rough opening article of flashing that provides a moisture barrier and a uniform caulking surface upon which to apply sealant material between a window rough opening and an installed window frame positioned therein. The article is a structure formed of a continuous sheet of material, whereby the material forms a uniform return flange, a first nailing flange, and an optional outer flange. The return flange is placed over the thickness of the rough opening, while the nailing flange is secured about the outer perimeter of the rough opening and is fastened thereto. The optional outer flange is adapted for use with stucco façade, and the single flange embodiment is adapted for use with brick façade. The device is cut to length and installed, wherein adjacent segments and corner joints are installed using a lap joint configuration to prevent cold joints along the rough opening interface.