The ornamental design for a rack, as shown and described.
FIG. 1 is a front perspective view from above of a rack showing our new design;
FIG. 2 is a rear perspective view from below thereof;
FIG. 3 is a top plan view thereof;
FIG. 4 is a bottom plan view thereof;
FIG. 5 is a front elevational view thereof;
FIG. 6 is a rear elevational view thereof;
FIG. 7 is a left side elevational view thereof; and,
FIG. 8 is a right side elevational view thereof.
Any broken lines showing on the drawing disclosure is for illustrative purposes only and forms no part of the claimed design.
Any shading lines shown in the drawings represent an approximate three-dimensional contour of the design, and are not intended to indicate surface decoration. As is generally recognized by persons skilled in the art of preparing digital drawings, such shading lines can be light-weight solid lines meant to convey the boundaries for curved surfaces on the device.
Color may or may not form part of the claimed design.