A refrigerator includes a housing body including an inner space of the refrigerator and a cooling cycle mechanism configured to cool the inner space. The housing body includes a plurality of housing body elements separated along a predetermined separate surface, and the plurality of housing body elements is removably coupled to each other to allow an end surface of one of the plurality of housing body elements to face an end surface of another one of the plurality of housing body elements. A sealing mechanism configured to form an air surface between opposite end surfaces is provided to prevent air from flowing into or from the inner space through between the opposite end surfaces.