The siFramo 80 Cantilever Bracket is a galvanized hollow-box section with welded end-plate that serves as a cantilever arm. It may be used as a crossbar when combined with End Support STA and (4) Self Forming Screws. Install the Cantilever Bracket with (4) Self Forming Screws when attaching to another siFramo hollow-box section. Alternatively, with (2) suitable wall anchors when fixed directly to a building's structure.