A defense structure and methods of use for penetrating the defense structure with a projectile from a first side and preventing a projectile from penetrating the defense structure from a second side. The defense structure comprising a plurality of wedges arranged to rotate and abut each other using a tensioning member, such as a spring. Ballistic and resilient members are provided on a rear surface of the plurality of wedges to prevent a projectile from penetrating the defense structure through deflection and/or adsorption of the projectile. A gap is formed between at least two of the plurality of wedges when a projectile is urged between the plurality of wedges from the first side. The tensioning member urges the plurality of wedges to rotate and abut each other after the projectile passes through the gap. The defense structure may be partially concealed within a structural element.

A storm protection system for a window or door unit located in a wall opening and having an outer frame, the system including at least one protective panel fit within the outer frame and wall opening, at least one pair of brackets connected to the outer frame at opposing sides of the wall opening and spaced from the front surface of the panel a first distance, at least one force distribution body with at least one alignment structure on the front surface and spaced from the rear surface a second distance that is greater than the first distance, at least one elongated flexible restraint extending between and connected to the at least two brackets is received by the alignment structure and when tensioned forces the at least one force distribution body against the at least one panel which forces the at least one panel against the window or door unit.

A storm protection system for a window or door unit located in a wall opening and having an outer frame, the system including at least one protective panel fit within the outer frame and wall opening, at least one pair of brackets connected to the outer frame at opposing sides of the wall opening and spaced from the front surface of the panel a first distance, at least one force distribution body with at least one alignment structure on the front surface and spaced from the rear surface a second distance that is greater than the first distance, at least one elongated flexible restraint extending between and connected to the at least two brackets is received by the alignment structure and when tensioned forces the at least one force distribution body against the at least one panel which forces the at least one panel against the window or door unit.

A passage barrier includes a frame and a gate engaged in the frame. The four corners of the frame are provided with mounting holes for receiving pressurized fasteners. An adjustment member can be rotated on a rod of the pressurized fastener. The mounting hole and the rod are designed so that the rod can only slide in the mounting hole but cannot rotate. In the installation process, a user is reminded not to press the frame on both sides of the passage by rotating the rod of the pressurized fastener, but to press the frame on both sides of the passage by rotating the adjustment member, so that the user can quickly find the correct the installation method.

A passage barrier includes a frame and a gate engaged in the frame. The four corners of the frame are provided with mounting holes for receiving pressurized fasteners. An adjustment member can be rotated on a rod of the pressurized fastener. The mounting hole and the rod are designed so that the rod can only slide in the mounting hole but cannot rotate. In the installation process, a user is reminded not to press the frame on both sides of the passage by rotating the rod of the pressurized fastener, but to press the frame on both sides of the passage by rotating the adjustment member, so that the user can quickly find the correct the installation method.

A defense structure and methods of use for penetrating the defense structure with a projectile from a first side and preventing a projectile from penetrating the defense structure from a second side. The defense structure comprising a plurality of wedges arranged to rotate and abut each other using a tensioning member, such as a spring. Ballistic and resilient members are provided on a rear surface of the plurality of wedges to prevent a projectile from penetrating the defense structure through deflection and/or adsorption of the projectile. A gap is formed between at least two of the plurality of wedges when a projectile is urged between the plurality of wedges from the first side. The tensioning member urges the plurality of wedges to rotate and abut each other after the projectile passes through the gap. The defense structure may be partially concealed within a structural element.

A safe and convenient grille decorative flower structure comprises a horizontal frame, a mullion, and a flower body. The flower body is disposed in a window pane surrounded by the horizontal frame and the mullion, and the flower body is disposed in the horizontal frame or the mullion. The grille decorative flower structure is convenient to install or assemble, wherein the said structure is detachable and can be disassembled and mailed to clients to install or assemble by themselves. By a simple connection, the bonding strength of the whole framework is higher, and the said structure has an anti-theft effect.

A safe and convenient grille decorative flower structure comprises a horizontal frame, a mullion, and a flower body. The flower body is disposed in a window pane surrounded by the horizontal frame and the mullion, and the flower body is disposed in the horizontal frame or the mullion. The grille decorative flower structure is convenient to install or assemble, wherein the said structure is detachable and can be disassembled and mailed to clients to install or assemble by themselves. By a simple connection, the bonding strength of the whole framework is higher, and the said structure has an anti-theft effect.

A safe and convenient grille decorative flower structure comprises a horizontal frame, a mullion, and a flower body. The flower body is disposed in a window pane surrounded by the horizontal frame and the mullion, and the flower body is disposed in the horizontal frame or the mullion. The grille decorative flower structure is convenient to install or assemble, wherein the said structure is detachable and can be disassembled and mailed to clients to install or assemble by themselves. By a simple connection, the bonding strength of the whole framework is higher, and the said structure has an anti-theft effect.

A safe and convenient grille decorative flower structure comprises a horizontal frame, a mullion, and a flower body. The flower body is disposed in a window pane surrounded by the horizontal frame and the mullion, and the flower body is disposed in the horizontal frame or the mullion. The grille decorative flower structure is convenient to install or assemble, wherein the said structure is detachable and can be disassembled and mailed to clients to install or assemble by themselves. By a simple connection, the bonding strength of the whole framework is higher, and the said structure has an anti-theft effect.