The ornamental design for a transitionpanel, as shown and described.
FIG. 1 is an environmental view of a vehicle showing a transition panel according to an exemplary embodiment of our new design for use on a first side of the vehicle;
FIG. 2 is a front perspective view of the transition panel shown in FIG. 1 without the environmental elements;
FIG. 3 is a top view of the transition panel shown in FIG. 2;
FIG. 4 is a bottom view of the transition panel shown in FIG. 2;
FIG. 5 is a front view of the transition panel shown in FIG. 2;
FIG. 6 is a left side view of the transition panel shown in FIG. 2;
FIG. 7 is an environmental view of a vehicle showing a transition panel according to an exemplary embodiment of our new design for use on a second side of the vehicle;
FIG. 8 is a front perspective view of the transition panel shown in FIG. 7 without the environmental elements;
FIG. 9 is a top view of the transition panel shown in FIG. 8;
FIG. 10 is a bottom view of the transition panel shown in FIG. 8;
FIG. 11 is a front side view of the transition panel shown in FIG. 8; and,
FIG. 12 is a right side view of the transition panel shown in FIG. 8.
The broken lines shown in the figures represent portions of the transition panel that form no part of the claimed design.