Twin is a one-door refrigerator based on a modular concept that is in line with the size of built-in cabinets of a global standard. The user can choose a desired door direction and use the product as a large two-door refrigerator by making a combination as refrigerator and freezer sections. The shelves, whose height can be adjusted and the wider guards allow convenient storage of items. Stainless material creates a sophisticated feel. Usability has been improved through the easy-to-use door handle and the display, which indicates the operation status.