FIG. 1 is a front, raised perspective view of a combination unit according to the invention;
FIG. 2 is a front view of the combination unit of FIG. 1;
FIG. 3 is a rear view of the combination unit of FIG. 1;
FIG. 4 is a right side view of the combination unit of FIG. 1;
FIG. 5 is a left side view of the combination unit of FIG. 1;
FIG. 6 is a top view of the combination unit of FIG. 1;
FIG. 7 is a bottom view of the combination unit of FIG. 1; and,
FIG. 8 is a front, lowered perspective view of the combination unit of FIG. 1.
The broken lines show portions of the combination unit that form no part of the claimed design. The dash dot lines immediately adjacent to the claimed areas in the views represented the boundaries of the claimed design. The combination unit is shown with a symbolic break in its width and height. The appearance of any portion of the combination unit between the break lines forms no part of the claimed design.