The ornamental design for a ceilingfanhousing, as shown and described.
FIG. 1 is a bottom perspective view of a ceiling fan housing in accordance with my design;
FIG. 2 is an enlarged front elevation view of the ceiling fan housing in accordance with my design;
FIG. 3 is an enlarged back elevation view of the ceiling fan housing in accordance with my design;
FIG. 4 is an enlarged side elevation view of the ceiling fan housing in accordance with my design, the opposite side being a mirror image of that shown;
FIG. 5 is an enlarged bottom plan view of the ceiling fan housing in accordance with my design; and,
FIG. 6 is an enlarged top plan view of the ceiling fan housing in accordance with my design.
The broken lines showing environmental structure are for illustrative purposes and form no part of the claimed design.