Abstract: Burglar-proof screening for use with conventional screen doors, and the like, includes a framework provided with an opening and removably clampable into the conventional cutout provided in a screen door for removably receiving screening. A screen is removably arrangeable on the framework covering the opening provided therein, together with a grille arrangeable disposed substantially coextensive with, but spaced from the screen. The grille is removably mounted on the framework by connectors constructed in such a manner as to make it virtually impossible to remove the grille from outside of the structure associated with the door or other closure.