The ornamental design for extrusion for LED based lighting apparatus, as shown and described.
FIG. 1 is a top perspective view of the extrusion for LED based lighting apparatus, showing the new design;
FIG. 2 is a bottom perspective view thereof;
FIG. 3 is a front view thereof;
FIG. 4 is a top view thereof;
FIG. 5 is a rear view thereof;
FIG. 6 is a bottom view thereof;
FIG. 7 is another front view thereof; and,
FIG. 8 is a side view thereof.
The uniformly dashed lines shown in the drawings illustrate portions of the extrusion for LED based lighting apparatus which form no part of the claimed design.