A vacuum insulated glass unit frame assembly includes a rectangular vacuum insulated glass unit having two glass sheets separated by a sealed gap with a plurality of support structures, and a frame arrangement including a fixation system fixating the vacuum insulated glass unit at the frame arrangement, where the fixation system is arranged so as to allow edges of said vacuum insulated glass unit to thermally deflect in a deflection direction perpendicular to a frame opening plane due to a temperature difference between the two glass sheets, where the fixation system is configured so as to allow the magnitude of the thermal deflection to vary along the edge between the corners where the respective edge terminates.