But even just 1 side holds a ton of stuff and tool boards can be moved around at will. And attached at top to beam with 2 screws and sitting on floor tightly with adjustable feet , it is secure and firmly in place. But I could remove it entirely in a few minutes.
And then the other side is same for twice the storage. I'm making 3 units to use as a fully functional room divider. It'll look better as time goes by.