Will the pedestal fit under your standing desks at minimum height? Yes. The pedestal will fit with room to spare but be careful if you place anything on it.
How is it packaged? In a rugged cardboard box with foam inserts to inhibit damage. The box is then strapped before shipment.
Do I need to assemble it? It comes without the castors on the base so these have to be screwed into place by hand. Otherwise there is little else to do.
Is it easy to maintain? Yes. The powder coat is hard wearing. Be careful not to use abrasives on it when cleaning. A damp cloth should do.