The aim of the invention is to obtain a refrigerator which is provided with storing chambers such as a gas adjustment chamber which sustains strength with a simple structure and has the advantages oflow price and light weight. The refrigerator body (1) according to the invention comprises the following components: an outer profile component (14) which is provided with an opening (14r) for storingthe reserved object; a cover component (16) which opens and closes an opening (14r) of the outer profile component (14); and a sealing component (16p) which is provided between the cover component (16) and the opening (14r) of the outer profile component (14) and suppresses the air movement between the cover component (16) and the opening (14r) of the outer profile component (14). The invention is characterized in that: the opening of the outer profile component has a rectangular shape which is longer in width direction relatively to the height direction and is higher at the middle part thanthe end parts and has round corners; the outer profile component is formed integrally with a box shape; the upper surface (14e) and the bottom surface (14c) respectively have a curve surface shape which is projected at the outer parts.