Adjustable shelf to be accomodated in freezer compartment to improve cooling process speed

A refrigerator appliance comprising:

• a fast freezing system, the fast freezing system comprising:
• a compartment in which a food item can be placed;
• a fan configured to propel cold air toward the compartment;
• wherein the compartment comprises an adjustable baffle adapted to change the cross section area of the air passage.

A refrigerator comprising:

• a no frost freezer compartment;
• a fresh food compartment;
• a fast freeze compartment disposed within the fresh food compartment in which a food item can be placed, wherein the fast freeze compartment comprises an adjustable baffle adapted to change the cross section area of the air passage;
• and
• a fan configured to propel cold air toward the fast freeze compartment;
• wherein the fast freeze compartment further comprises a rear wall provided with at least one fan and a front swinging door, the adjustable baffle being interposed between side walls.