Refrigerator and manufacturing method thereof

A refrigerator comprising a storage space having an opened front portion and partitions coupled to an inner surface of the storage space to divide the storage space into a plurality of storage chambers, the refrigerator further comprising:

• an inner casing having the storage space defined thereby, and including a plurality of side walls, a rear wall and a bottom wall respectively formed with coupling recesses to which the partitions are coupled to;
• an outer casing coupled to the inner casing to define an appearance of the refrigerator;
• and
• an insulator filling a space between the inner casing and the outer casing,
• wherein the partitions include a first partition horizontally coupled to the plurality of side walls and the rear wall of the inner casing to divide the storage space into an upper storage chamber and a lower storage chamber, and a second partition vertically coupled to a bottom surface of the first partition and the bottom wall of the inner casing to divide the lower storage chamber into a left chamber and a right chamber,
• the first partition communicates with the inner casing so that the insulator fills at least a portion of the first partition, and
• the second partition communicates with the first partition so that the insulator fills the second partition.