Custom manufacture of polycarbonate glazing systems and components thereof; Custom manufacture of retrofit glazing systems and components thereof; Custom manufacture of extruded plastic shields specially adapted for glass panes, break-resistant extruded plastic shields specially adapted for glass panes, polycarbonate shields specially adapted for, and for use in protecting, glass panes, polycarbonate glass security panels specially adapted for glass panes, finished extruded plastic specially adapted for glass panes, protective window coverings specially adapted for window glass for building and for non-metal windows, and framing and anchoring systems for the foregoing.