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 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 side views being identical of that shown except for the position of the fan blades.
The broken line showing of the support rod, fan blades, canopy, upper cover and blade arms is included for the purpose of illustrating environmental structure and forms no part of the claimed design.