the center divider is not used, I tie wrap it to the bottom bars and put
the plastic trays under the bottom of cage, takes a little work sometimes to
get them in and out, but if you turn and pull the right way come out easy, you also
trim the plastic tray to make it easier if needed.
some of the new cages I hear don't have the bottom cross bar support, if that is
true you will need to make additional modifications, but finding a small plastic tube to tie wrap as a support should be easy at hardware store for the right
person.