The ornamental design for a windowshutterpanel, as shown and described.
The design is for a window shutter panel for use alone or for connection to one or more adjacent window shutter panels via a connection means along the top and bottom edges of the panels.
FIG. 1 is a perspective view of the front of a window shutter panel showing the design.
FIG. 2 is a perspective view of the rear of a window shutter panel showing the design.
FIG. 3 is an elevational view of one side edge of the design, the opposite side edge being a mirror image thereof.
FIG. 4 is an elevational view of the front of the design shown in FIG. 1.
FIG. 5 is an elevational view of the rear of the design shown in FIG. 2.
FIG. 6 is an elevational bottom view of the design.
FIG. 7 is an elevational top view of the design.
FIG. 8 is an enlarged front perspective view of the window shutter panel broken in the center for ease of illustration; and,
FIG. 9 is an enlarged rear perspective view of window shutter panel broken in the center for ease of illustration.
Such connection means is shown in the drawings in broken lines for illustrative purposes only and forms no part of the claimed design.