Folding gates can be installed virtually anywhere and any way you need them, including inside or outside of door jambs, between posts or bollards, to pallet racks or between walls. 3/4" Heavy-Duty Galvanized "U" Channel Steel Construction, Designed To Withstand Rain And Snow. Heavy-duty 1-1/2" x 1-1/2" vertical member angles and a 5/8" self-securing drop pin that is designed to fit directly into floor holes for maximum strength and security. Gate pivots 180 on its mounting leaving the opening completely clear of obstructions