"Box retailers" refers to large stores or chains that have a distinctive rectangular or box-like shape. They generally sell a wide variety of products under one roof at competitive prices. Full definition
You can also find these items at your local arts and crafts stores or even big box retail stores. (ourfamilyworld.com)
It is also the primary source of supply for everything from vitamin C to smart phones, and much in between that fills many of our big box retail stores. (fortune.com)
It may come a few months later than expected, but Mighty No. 9 will see a worldwide release this Fall, complete with boxed retail versions and DLC. (theplatformer.net)