Catenary structures consist of top assemblies comprised of three idlers joined by connecting links in the center with hooks on each end. These idlers are mounted onto ribbons or cast saddles attached to the side rails. The side rails attach to stands and are secured by driving a roll pin to engage a set of slots. The stand assemblies also provide the mounting for the return idler and can be either floor or roof mounted. Available in 24" to 60" belt widths.