I claim the ornamental design for a multi-use C-channel section, as shown.
FIG. 1 is a top perspective view of a multi-use C-channel section showing my design;
FIG. 2 is a bottom perspective view thereof;
FIG. 3 is left side view thereof;
FIG. 4 is a right side view thereof;
FIG. 5 is a front view thereof;
FIG. 6 is a back view thereof;
FIG. 7 is a top view thereof; and,
FIG. 8 is a bottom view thereof.
The multi-use C-channel section is shown with a symbolic break in its length. The appearance of any portion of the multi-use C-channel section between the break lines forms no part of the claimed design.