FIG. 1 is a front/right/top perspective view of a first embodiment of a bin opening (a front/left/top perspective view would be a mirror image thereof);
FIG. 2 is a rear/left/bottom perspective view thereof (a rear/right/bottom perspective view would be a mirror image thereof);
FIG. 3 is a front elevational view thereof;
FIG. 4 is a rear elevational view thereof;
FIG. 5 is a left side elevational view thereof;
FIG. 6 is a right side elevational view thereof;
FIG. 7 is a top plan view thereof; and
FIG. 8 is a bottom plan view thereof.
FIG. 9 is a front/right/top perspective view of a second embodiment of a bin opening (a front/left/top perspective view would be a mirror image thereof);
FIG. 10 is a rear/left/bottom perspective view thereof (a rear/right/bottom perspective view would be a mirror image thereof);
FIG. 11 is a front elevational view thereof;
FIG. 12 is a rear elevational view thereof;
FIG. 13 is a left side elevational view thereof;
FIG. 14 is a right side elevational view thereof;
FIG. 15 is a top plan view thereof; and
FIG. 16 is a bottom plan view thereof.
FIG. 17 is a front/right/top perspective view of a third embodiment of a bin opening (a front/left/top perspective view would be a mirror image thereof);
FIG. 18 is a rear/left/bottom perspective view thereof (a rear/right/bottom perspective view would be a mirror image thereof);
FIG. 19 is a front elevational view thereof;
FIG. 20 is a rear elevational view thereof;
FIG. 21 is a left side elevational view thereof;
FIG. 22 is a right side elevational view thereof;
FIG. 23 is a top plan view thereof; and,
FIG. 24 is a bottom plan view thereof.
The dashed dot lines immediately adjacent to the shaded areas in the figures represent the boundaries of the claimed design. The dashed lines in the figures illustrate the portions of the design that form no part of the claimed design. None of the broken lines form any part of the claimed design.