For folks in need to build a cabinet. I just reviewed this Metris / Sportsmobile video carefully and think Sportsmobile is using 8020 Quick Frame or a like extrusions and plastic brackets. Even the bed panels seem made from the Quick Frame.
https://8020.net/catalog/category/vi...d/837/?cat=380 Compare it to my table, seems as the same material.
https://www.youtube.com/watch?time_c...&v=WvcyBQwzh1Y