S.i feeders has been with cowco, inc since 1997, as we became there factory rep. for Indiana, Michigan, Ohio, west Virginia, Kentucky, and half of the southern state of Illinois. S.I. is known for having the very first feeder wagons on the market. All of S.I. feeder’s are equipped with feed saver lips, to cut down on the amount of feed lost. the bunks and wagons both come with slanted bars to reduce tossed feed. The feeders have adequate drain holes on each end of the wagon/bunks. S.I. feeders are coated with acid resistant paint to help provide resistance against any corrosion.