When you think of a standard mailing box, you probably picture a regular slotted container. These containers feature two sides with equal-sized flaps that meet in the middle to form the top and bottom of your box. A half slotted container has only one set of flaps and an open top, allowing you to access the contents of your container quickly.
HSCs are also called telescope boxes because you can pair them with a lid by placing a slightly larger top tray over the outer edges of your container.