... metal skin. Both of our Heavy Duty Box Feeder without Lid and with Lid is tough enough ... heavy duty cattle/horse hay and grain feeder This feeder is heavy duty at 12' long x ... We can also make this feeder in other lengths. Galvanized pasture feeder Pasture Feeder 5'Ideal for horses, cattle ... larger animal.Wide base for stability & durability.Pasture Feeder 3'Perfect for goats, sheep, & other smaller ...