This clamp-on bracket easily attaches to many different types of panels and works especially well on pens with vertical bar construction. Set it at any height desired, adjustable knobs on the back allow you to firmly secure in place. Constructed of durable steel with powder coat paint finish for corrosion protection. Many hole combinations allow for 8" long up to 18" long clip-on feeders to hang from this bracket. | Sullivan Supply Inc Panel Mount Livestock Feeder Hanger | Size 18" x 3" x 3.25"