Refrigerator

A refrigerator, comprising:

• an inner case forming a storage compartment;
• a duct in the storage compartment, the duct including:
• a duct body including a protrusion protruding from a front surface of the duct body, and
• a first coupling portion on the front surface of the duct body,
• wherein the duct allows air to flow through the duct;
• and
• a partition detachably mountable in front of the duct so as to divide the storage compartment into a refrigerating compartment and a freezing compartment positioned below the refrigerating compartment, the partition including:
• a partition body,
• a second coupling portion on a rear surface of the partition body and couplable to the first coupling portion,
• a partition hole in the rear surface of the partition body, and
• a partition insulator within the partition body and including an exposed portion that protrudes backward into the partition hole so as to be exposed to an outside of the partition body through the partition hole, wherein the partition and the duct are configured such that, with the partition mounted in front of the duct and the second coupling portion coupled to the first coupling portion, the exposed portion is in close contact with the duct body and the protrusion protrudes toward and presses against the partition.