Appliance door with vacuum insulated outer door

A refrigerator, comprising:

• an insulated cabinet structure defining a refrigerated interior space having an access opening that permits user access to the refrigerated interior space;
• a cooling system that is configured to cool the refrigerated interior space;
• a door assembly that selectively closes off at least a portion of the access opening;
• wherein the door assembly includes a perimeter structure that is movably mounted to the insulated cabinet structure for movement between open and closed positions, the perimeter structure defining an outer perimeter and a door opening through a central portion of the perimeter structure to provide access to the refrigerated interior space when the perimeter structure is in a closed position, wherein the perimeter structure includes an outer wrapper and an inner liner that is secured to the outer wrapper to define a ring-shaped cavity, extending around the perimeter structure between the outer perimeter of the structure and the door opening, and wherein the ring-shaped cavity is filled with closed-cell foam insulation to form a rigid structure, wherein the perimeter structure includes oppositely facing inner and outer surfaces defining a first thickness;
• wherein the door assembly further includes at least one shelf supported by the perimeter structure, and wherein the shelf has an upwardly opening U-shape in cross section to support jugs of milk thereon, and wherein the shelf is disposed in the door opening;
• wherein the door assembly further includes a vacuum insulated outer door that is movably mounted to the perimeter structure whereby the outer door can be moved between open and closed positions relative to the perimeter structure when the perimeter structure is in its closed position to selectively close off at least a portion of the door opening without moving the least one shelf, wherein the vacuum insulated outer door includes inner and outer layers that are spaced apart to define a cavity, and wherein the cavity defines a vacuum, and wherein the inner and outer layers have outer surfaces defining a second thickness, and wherein the first thickness is significantly greater than the second thickness.