The Wall Grazer 3-in-1 horse feeder is designed for feeding single or multiple horses in paddocks or outdoor applications where a flat wall attachment can be made. The Wall Grazer features a one piece molded polymer design that has a large center cavity for hay and two smaller side cavities for grain and salt. The interior of this feeder is sloped for drainage and can be used outdoors by simply drilling three 1/2" holes in the back of the feeder near the bottom. | Stall Grazer 3-in-1 Flat Wall Horse Feeder | Size 44" W x 32" T x 23" D