The ornamental design for a backplate for a walllight fixture, as shown and described.
FIG. 1 is a perspective view of a backplate according to an exemplary embodiment of the present invention, the lamp and connecting arm being illustrated in broken lines;
FIG. 2 is a front elevational view of the backplate illustrated in FIG. 1;
FIG. 3 is a right side elevational view of the backplate illustrated in FIGS. 1–2, the left side being a mirror image thereof;
FIG. 4 is a top plan view of the backplate illustrated in FIGS. 1–3; and,
FIG. 5 is a bottom plan view of the backplate illustrated in FIGS. 1–4.
The broken lines are shown for illustrative purposes only and form no part of the claimed design.