The ornamental design for a panel for an electronicsrack, as shown and described.
FIG. 1 is a perspective view of a panel for an electronics rack showing my new design;
FIG. 2 is a front view thereof;
FIG. 3 is a rear view thereof;
FIG. 4 is a top view thereof;
FIG. 5 is a bottom view thereof;
FIG. 6 is a left side view thereof;
FIG. 7 is a right side view thereof;
FIG. 8 is a cross-sectional view thereof, taken along lines 8-8 in FIG. 2; and,
FIG. 9 is an enlarged segment of the perspective view thereof.
The dash-dot break lines that represent the bounds of the claim. The portions of the drawings appearing in broken lines are for environment only and do not form a part of the claimed design.