The ornamental design for a manifold, as shown and described.
FIG. 1 is an upper perspective view of a manifold design;
FIG. 2 is a top view of the design of FIG. 1;
FIG. 3 is a bottom view of the design of FIG. 1;
FIG. 4 is a first side view of the design of FIG. 1;
FIG. 5 is a second side view of the design of FIG. 1;
FIG. 6 is a front view of the design of FIG. 1;
FIG. 7 is a rear view of the design of FIG. 1; and,
FIG. 8 is a lower perspective view of the design of FIG. 1.
The broken lines shown in the drawings are included for the purpose of illustrating the unclaimed boundary and/or unclaimed portions of the manifold. The broken lines form no part of the claimed design.