A prefabricated modular fencing system comprises first and second fence panels, each panel having opposing side ends. Each side end carries outboard connectors. The connectors have upper sides defining one of a concavity and a convexity and have lower sides defining the other of a concavity and a convexity, and the connectors define a bore within each convexity. The convexity of a connector carried by the first fence panel may be complementary with and interfitted within the concavity of another connector carried by the second fence panel, to assemble the first and second fence panels together. A post is disposed through the bores of interfitted connectors.

A fencing assembly is provided, the fencing assembly is used for encompassing a certain area and isolating the area from others. By virtue of a plurality of holes on the surface of the rail, and a plurality of positioning assembly on the bottom surface of the rail corresponding to the hole, so that the user can easily and directly insert one end of the baluster into the hole, and the baluster is engaged with the rail and provide a detachable fence.

A stringer for an off-set board-on-board fence having an inverted U-section elongated body having two mutually opposed sides depending from an intermediate adjoining portion having laterally off-set and longitudinally over-lapping first and second sets of spaced board slots extending flush with inside surfaces of the opposed sides for attaching fence boards of predetermined cross-section flush to the inside surfaces of the opposed sides of the stringer. The stringer has board fastening apertures in the opposed sides of the stringer to fasten the fence boards flush with the inside surfaces of the opposed sides. The stringer has a plurality of bracket attachment apertures, preferably square, arranged longitudinally from end to end, between the first and second sets of board slots for attaching post brackets at each end of the stringer. A stringer support of each opposing bracket is within range of one bracket attachment aperture at each end of the stringer.

A fencing assembly has two rails, multiple balusters, and multiple positioning assemblies. The two rails are disposed at a spaced interval, and each rail is hollow. Each one of the balusters is hollow and has two ends, wherein each one of the two ends is detachably mounted with a respective one of the two rails. Each one of the positioning assemblies is mounted with a respective one of the two rails and a respective one of the balusters, and has a positioning component and an anti-slip sheath. The positioning component is mounted with the corresponding rail, and has at least one stopping flange protruding radially. The anti-slip sheath is inserted into an end of the corresponding baluster and is sheathed on the positioning component, and at least part of the stopping flange abuts on an inner surface of the anti-slip sheath.

A security fence includes a pair of posts and a plurality of rails supported by the pair of posts and disposed vertically spaced apart. Each rail includes a bottom wall and an upper wall, each defining a plurality of spaced apart openings. A plurality of pickets are horizontally spaced apart along the plurality of rails, each picket extends through a respective bottom opening and a respective upper opening of each rail. A slide lock bar is disposed within at least one of the plurality of rails and is supported by the bottom wall of the one of the plurality of rails. The slide lock bar traverses the plurality of pickets and is received by a notch in each picket. Engagement of the slide lock bar with the notches enables angular displacement of each picket with respect to each rail.

A fencing assembly has two rails, multiple balusters, and multiple positioning assemblies. The two rails are disposed at a spaced interval, and each rail is hollow. Each one of the balusters is hollow and has two ends, wherein each one of the two ends is detachably mounted with a respective one of the two rails. Each one of the positioning assemblies is mounted with a respective one of the two rails and a respective one of the balusters, and has a positioning component and an anti-slip sheath. The positioning component is mounted with the corresponding rail, and has at least one stopping flange protruding radially. The anti-slip sheath is inserted into an end of the corresponding baluster and is sheathed on the positioning component, and at least part of the stopping flange abuts on an inner surface of the anti-slip sheath.

The present application provides a fence panel comprising: a plurality of upright members, and at least one rail connected to each of said upright members, wherein the at least one rail comprises: an external casing defining a rail channel and comprising at least one aperture, wherein each of the upright members extends through an aperture into the rail channel, and an inner plate that extends along at least part of the length of the rail channel, wherein the inner plate is at least partly enclosed by the external casing, wherein the inner plate comprises a flat portion comprising a plurality of openings that rests against the upright members and two angled portions connected to opposite sides of the flat portion and extending away from said upright members and wherein the plurality of upright members each comprise a projection that extends into one of said openings to connect said upright member to the rail.

A security fence includes a pair of posts and a plurality of rails supported by the pair of posts and disposed vertically spaced apart. Each rail includes a bottom wall and an upper wall, each defining a plurality of spaced apart openings. A plurality of pickets are horizontally spaced apart along the plurality of rails, each picket extends through a respective bottom opening and a respective upper opening of each rail. A slide lock bar is disposed within at least one of the plurality of rails and is supported by the bottom wall of the one of the plurality of rails. The slide lock bar traverses the plurality of pickets and is received by a notch in each picket. Engagement of the slide lock bar with the notches enables angular displacement of each picket with respect to each rail.

A security grid structure comprising two spaced elongate channel sections with side walls which are formed with spaced apart apertures, and elongate members each of which extends through associated apertures in the side walls, and at least one elongate element which extends transversely to, and which is secured to, the elongate members.

A barrier, such as fence panel, is formed from a plurality of channel-shaped rails and plurality of upright members. Each upright member traverses the rail channels of the rails forming the barrier and is mechanically connected to the rail, such that the upright member is selectively tiltable with respect to the rail within an angular adjustment range. The mechanical connection between rail and upright member may be formed by a weld, such as a resistance weld, by a permanent adhesive, or with a fastener such as bolt or screw. A tab that extends from the rail web may be used to connect a rail to an upright member. The tab may depend from a bracket installed within the rail channel, or may be cut out and bent into the channel from the web. The tab is rotatable about an axis situated at or adjacent the web.