A wind resistant rolling shutter assembly having a flexible barrier made of a plurality of interconnected slats. Each individual slat is hollow, has inner and outer surfaces, two opposing ends and one or more support ribs. Two brackets each having two opposing ends, run internally from one opposing end of each slat to the other. Four slat end retainers, each having a head and a point, are disposed point first one in each bracket end. The flexible barrier rides in two track assemblies positioned vertically on the frame of a door or window. The track assemblies have track channels and retention arms located therein. When the slats are flexed the slat retainers interact with retention arms and prevent the dislodgement of the flexible barrier.