The ornamental design for a supporthousing, as shown and described.
FIG. 1 is a front, right side perspective view of a support housing showing my new design;
FIG. 2 is a front elevational view thereof;
FIG. 3 is a rear elevational view thereof;
FIG. 4 is a left side elevational view thereof;
FIG. 5 is a right side elevational view thereof;
FIG. 6 is a top plan view thereof; and,
FIG. 7 is a bottom plan view thereof.
The portions shown in broken lines are included for illustrative purposes only and form no part of the claimed design; the dash-dot-dash lines represent boundaries of the claimed design and form no part thereof.
The drawings include surface shading that represents contour and not surface ornamentation.