The DGS Ninja I-Beam bridge is a great addition to any rig. The uprights are 10ft tall with adjustable wooden feet so that they can be used in conjunction with our 12ft or 14ft DGS Ninja Rigs. The 8ft cross piece can be mounted using 1.25" cross pipes (inside or outside the rig). The Wooden I-Beam measures 8" wide and is perfect for scaling across! It is made entirely of wood and can be secured to your flooring using velcro to Carpet Bonded Foam or by using concrete anchors.