US D361238 S
FIG. 1 is a perspective view of a window sill extension showing my new design;
FIG. 2 is a front elevational view thereof;
FIG. 3 is a top view thereof;
FIG. 4 is a left side elevational view with the right side being a mirror image thereof;
FIG. 5 is a rear view thereof; and,
FIG. 6 is a bottom view thereof.
The broken line showing of a portion of a window sill in FIGS. 2 and 4, a pot and plant in FIG. 2, and a fastener in FIG. 4 is for illustrative purposes only and forms no part of the claimed design.