Needing just a portion of one of our Copperhead Concave System? Order it up here! Single sections of our Copperhead Concaves are available with no cover plates. Expect the exact same material, workmanship and warranty as our complete Concave systems in a modular form.  You must order the exact section you are looking to replace. The Deere S and STS series #2 section will fit in the #3 position.  The #4 is a new product that replaces the finger grates in the separation section.  It looks like the #3 grate but bolts on both sides, just like the finger grates do.