The ornamental design for an under-sink pull-out organizer, as shown and described.
FIG. 1 is a perspective view of an under-sink pull-out organizer with a modular shelf of the organizer mounted at a left position on a pull-out drawer of the organizer;
FIG. 2 is a front elevational view of the under-sink pull-out organizer of FIG. 1;
FIG. 3 is a top plan view thereof;
FIG. 4 is a rear elevational view thereof;
FIG. 5 is a left-side elevational view of the under-sink pull-out organizer, with the right-side elevational view being a substantial mirror image thereof;
FIG. 6 is a bottom plan view thereof;
FIG. 7 is a perspective view of the under-sink pull-out organizer with the modular shelf mounted at a right position on the pull-out drawer; and,
FIG. 8 is a perspective view of the under-sink pull-out organizer of FIG. 1 with the drawer in a pulled-out position.