Abstract: A main slat for a roller shutter system is provided. The slat includes a slat body having a first and second end, a hook end connected to the first end of the slat body, a screw boss connected to the second end of the slat body, and a receiving end connected to the screw boss. The hook end and the receiving end are each shaped such that the hook end is laterally insertable into the receiving end of an adjacent main slat and when so inserted forms a hinge. The slat body has a central cross section including at least first and second portions, the first and second portions each having a different radius of curvature.

Abstract: A metal shutter with improved air and light transmission is provided. The shutter comprises a metal top, a metal bottom, and two metal sides, which can be collectively assembled into a frame. The frame can have a metal support column that can be affixed to the top and bottom. A number of metal slats can be affixed between the sides of the shutter, and can either pass through the center column or can be affixed to the center column. A hinge can be affixed to the top of the frame, and can also be affixed to a structure. The top, bottom, sides, support column, slats, hinge, and a lock all comprise the shutter. The hinge allows the shutter to rotate between a first, substantially vertical, position, and a second, non-vertical position. The lock holds the shutter to a structure when the shutter is in the first position.

Abstract: A metal shutter with improved air and light transmission is provided. The shutter comprises a metal top, a metal bottom, and two metal sides, which can be collectively assembled into a frame. The frame can have a metal support column that can be affixed to the top and bottom. A number of metal slats can be affixed between the sides of the shutter, and can either pass through the center column or can be affixed to the center column. A hinge can be affixed to the top of the frame, and can also be affixed to a structure. The top, bottom, sides, support column, slats, hinge, and a lock all comprise the shutter. The hinge allows the shutter to rotate between a first, substantially vertical, position, and a second, non-vertical position. The lock holds the shutter to a structure when the shutter is in the first position.

Abstract: A method for manufacturing protective shutters is provided. The method may include: shaping metal to form shutter components, the shutter components comprising at least a top guide piece and a bottom guide piece, a plurality of shutter blades, and side supports; cutting the shutter components to predetermined dimensions; drilling screw holes into the shutter components at predetermined locations; providing a plurality of guide wheels for guiding the shutter blades along a hollow portion in the top guide piece; providing a plurality of protruding pieces for protruding from joints where two shutter blades attach and for guiding the shutter blades along the top and bottom guide pieces; and providing mounting hardware for attaching the protective shutters to a fixed structure and for attaching the shutter components together. The shutter components, guide wheels, protruding pieces, and mounting hardware are for being packaged together for delivery to a recipient.