Most often DME manifold systems are built with two plates: A “Nozzle Retainer” plate, in which the nozzle assemblies are retained and the manifold is partially retained, and, a “Top Clamp” plate in which the remainder of the manifold is retained. DME Manifold system scan also be built as “three plate” systems in which a third, middle plate called the “”Manifold Retainer Plate” is used. In Automotive-type applications where mold bases are very large, it is not uncommon to substitute the “Manifold Retainer Plate” with Rails. Some mold makers will refer to the hot runner manifold as one of the system plates. DME normally refers to the hot runner manifold as the “Manifold”.