Separate auxiliary compartment of a federally regulated consumer product refrigerator, refrigerator-freezer, or miscellaneous refrigeration product

means a separate freezer, fresh food, or cooler compartment that is not the primary freezer, primary fresh food, or primary cooler compartment. Separate auxiliary compartments may also be convertible (e.g., from fresh food to freezer). Separate auxiliary compartments may not be larger than the primary compartment of their type, but such size restrictions do not apply to separate auxiliary convertible compartments.