Corner insert for mitred extruded window frames

FIG. 1 is a top, front, and right side perspective view of a corner insert for mitred extruded window frames showing my new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a left side elevational view thereof;

FIG. 5 is a right side elevational view thereof;

FIG. 6 is a bottom plan view thereof;

FIG. 7 is a rear elevational view thereof; and

FIG. 8 is a top, front and left side perspective view of an alternate embodiment thereof, the only difference being that the article is a mirror image of the first embodiment.