Polypropylene Polypropylene Bin Kit, 7.375 in. D x 3 in. H x 4.125 in. W, RedMfr #: 3 220R 6 Unique dual interlocking channel system slides and locks bins together ing bins will not collapse, cave in or topple into one another Mount to wall using the 5 600 wall mount rail system, on louvered panels or stack on a flat surface to provide multiple storage options for small items Bottom interlocking rail allows bins to be nested offering the user a smaller footprint in tight spaces Extra deep groove system accepts bin dividers