Beam

FIG. 1 is a front, left, top perspective view of a beam in accordance with my new design;

FIG. 2 is a front elevation view thereof;

FIG. 3 is a back elevation view thereof;

FIG. 4 is a top plan view thereof;

FIG. 5 is a bottom plan view thereof;

FIG. 6 is a right side elevation view thereof;

FIG. 7 is a left side elevation view thereof; and,

FIG. 8 is a back, left, bottom perspective view thereof.

The broken lines in drawings show portions of the beam that form no part of the claimed design.