The ornamental design for an interchangeable windowtreatmentbracketkit, as shown and described.
FIG. 1 is a perspective view of a interchangeable window treatment bracket
kit showing my new design;
FIG. 2 is a rear view thereof;
FIG. 3 is a top view thereof;
FIG. 4 is a right end view thereof; and,
FIG. 5 is an enlarged exploded perspective view showing the base plate and
the fixture plate of one portion of the kit separately for convenience of
illustration.