Lower half of Cyclone Separator (silver sections) are probably the first
model Oneida sold which had an internal cartridge filter. Later combined
with a newer model (white sections) to remove the internal filter and
add the much larger and easier to clean external filter. Could not easily
just use the new separtor due to a change in the inlet location. Old
separtor has the inlet to the rear as mounted, new model moved the
inlet to the front. Doing so would necessitated ductwork modification
which would be problematic due the the wye branch right next to it.