The ornamental design for a ceilingfanhousing, as shown and described.
FIG. 1 is a bottom perspective view of a ceiling fan housing showing an embodiment in accordance with my design;
FIG. 2 is a reduced top plan view of the ceiling fan housing in accordance with my design;
FIG. 3 is a reduced bottom plan view of the ceiling fan housing in accordance with my design; and,
FIG. 4 is an enlarged side elevation view of the ceiling fan housing in accordance with my design, all sides being substantially identical.
The broken line showing of a canopy, blades and a support rod is included for the purpose of illustrating environmental structure and forms no part of the claimed design.