A panel assembly for a vacuum insulated structure includes a first panel having inner and outer surfaces and a second panel having inner and outer surfaces. The outer surface of the second panel is partially disposed on the inner surface of the first panel to define a joint portion therebetween. A seam member operably couples the first panel to the second panel along the joint portion. At least one cross member intersects the seam member. The at least one cross member further operably couples the first panel to the second panel.