High Back Sink Basin

FIG. 1 is a front perspective view of a high back sink basin, showing my new design;

FIG. 2 is a rear perspective view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a top plan view thereof;

FIG. 6 is a bottom plan view thereof; and,

FIG. 7 is a left-side elevational view thereof, the right-side elevational view being a mirror image thereof.

The broken lines in the figures depict portions of the high back sink basin that form no part of the claimed design.