Assembly is relatively easy but takes a long time especially since I had to build two. They take very little surface area especially when against the wall. A nice inconspicuous addition to my bedroom. On an average (being very creative) i can fit around 24 pairs in one rack if you dont mind stacking up some for your flats and sandals. If you mostly have heels (or do not want to stack your shoes) then a maximum of 16 pairs which might not be practical for such a large storage unit. I wish it came in more colourful options.