The ornamental design for a trailer side slatextrusion, as shown and described.
FIG. 1 is a front view in perspective of a trailer side slat extrusion of
indefinite length illustrating my new design, the backside thereof being
substantially unornamented;
FIG. 2 is a perspective view of the trailer side slat extrusion of FIG. 1
shown installed on a trailer for transporting horses or other livestock;
the broken lines are for environmental purposes only and form no part of
the claimed design;
FIG. 3 is a cross sectional view taken along lines 3--3 of FIG. 2 of the
trailer side slat extrusion; and,
FIG. 4 is an enlarged view of the circumscribed portion taken from FIG. 2
showing a number of similar extrusions positioned adjacent each other.