Umbilical for pass through in vacuum insulated refrigerator structures

A method of routing utility lines in a vacuum insulated refrigerator structure, the method comprising:

• forming a shell having an internal cavity, the shell having at least first and second openings to the internal cavity;
• forming an elongated non-linear umbilical having at least one bend, the umbilical comprising an elongated impervious sleeve and an elongated core structure disposed inside the sleeve, wherein the core structure defines at least two elongated internal passageways extending lengthwise along the umbilical, surrounding the core structure;
• sealingly connecting a first end of the sleeve to the shell at the first opening;
• sealingly connecting a second end of the sleeve to the shell at the second opening;
• forming a vacuum in the internal cavity of the shell;
• and
• routing utility lines through the at least two elongated internal passageways whereby portions of the utility lines are disposed inside the umbilical, and opposite ends of the utility lines extend out of opposite ends of the umbilical.