Vacuum insulated structure tubular cabinet construction

A method of fabricating a vacuum insulated refrigerator housing, the method comprising:

• forming an elongated tube having opposite open ends defining a length therebetween, the elongated tube having a substantially uniform cross sectional shape along the length of the tube, wherein the elongated tube defines generally planar first and second oppositely-facing primary outer surfaces and first and second end surfaces extending between the first and second primary outer surfaces;
• deforming the tube along at least four fold lines to form at least four corners whereby portions of the first primary surface adjacent each corner are substantially orthogonal relative to one another;
• sealing the opposite ends of the elongated tube to form an air tight insulating space within the tube;
• connecting the opposite ends of the tube to one another to form a refrigerator housing structure having horizontally spaced apart generally vertical side walls and vertically spaced apart generally vertical upper and lower side walls, wherein the refrigerator housing structure defines an internal space with vertically enlarged front and rear openings;
• forming a vacuum in the insulating space within the tube;
• attaching an insulated rear panel to the refrigerator housing structure to at least partially close off the enlarged rear opening.