Another innovative J & J design allows us to offer a lightweight, yet rock-solid dog walk, without the use of supplemental, loose support posts. Aluminum struts form a sturdy support triangle under the center section, and support cables are easily tensioned to stiffen the ramps. Our design also allows room under the center section to place a tunnel. One-piece wood skins are painted blue with yellow contact zones, using textured paint for good traction. 4' height with 12' ramps with cleats and 12' center section to comply with either A.K.C. or U.S.D.A.A regulations. Assembly or tear down takes just minutes, and requires no tools. Total weight: 180 lbs.