A split-collar fan orifice apparatus and method are disclosed. The split-collar fan orifice includes a generally semi-annular member having a first end and a second end, the member having an inner surface and an outer surface. The member has a first mating surface on the first end and a second mating surface on the second end. The first mating surface and the second mating surface are different. The split-collar fan orifice further includes a plurality of ribs disposed along the outer surface of the member. The plurality of ribs is configured to provide rigidity to the member. The plurality of ribs includes a first rib and a second rib, and the first rib extends in a first direction and the second rib extends in a second direction.