Abstract: A burglar- and weather-resistant cover for an opening such as a door or window. The cover includes a pair of opposed and generally parallel tracks with an upper housing extending therebetween. A plurality of louvers are generally parallel and connected to the upper housing by a first cable in a manner that allows the first cable to be coiled, and to a pair of second cables which engage the louvers in a manner that spaces the louvers at regular intervals. The cover further includes a pair of locking members, with each locking member coupled to one of the tracks an movable between a first position and a second position. The locking members are adapted to automatically move from the first to the second position when the louvers are deployed from a retracted position to a deployed position.