Refrigerator

A refrigerator, comprising:

• a first inner case forming a first storage compartment and comprising a plurality of first plates each formed by injection molding;
• a second inner case forming a second storage compartment and comprising a plurality of second plates each formed by injection molding;
• an outer case coupled to an outer side of the first inner case and an outer side of the second inner case to form an exterior of the refrigerator;
• an insulation provided between the first inner case and the outer case, between the second inner case and the outer case, and between the first inner case and the second inner case;
• and
• a cold air guide surrounded by the insulation between the first inner case and the second inner case, and configured to form a cold air flow path connecting the first storage compartment and the second storage compartment,
• wherein:
• the plurality of first plates comprise a first lower plate forming a lower surface of the first storage compartment,
• the plurality of second plates comprise a second upper plate forming an upper surface of the second storage compartment,
• the first lower plate comprises a first hole formed through the first lower plate,
• the second upper plate comprises a second hole formed through the second upper plate
• the first lower plate comprises a first sealing rib continuously formed along a circumference of the first hole and protruding downward from the first lower plate, and
• the second upper plate comprises a second sealing rib continuously formed along a circumference of the second hole and protruding upward from the second upper plate.