Panel

FIG. 1 is a bottom, front, right perspective view of a panel showing our new design;

FIG. 2 is a top, front, right perspective view thereof;

FIG. 3 is a front elevation view thereof;

FIG. 4 is a right side elevation view thereof;

FIG. 5 is a rear elevation view thereof;

FIG. 6 is a left side elevation view thereof;

FIG. 7 is a bottom plan view thereof; and,

FIG. 8 is a top plan view thereof.

The broken lines illustrating portions of the panel form no part of the claimed design. The dot-dash broken lines define the bounds of the claimed design and form no part thereof.