was a little tricky to put together even with another person. the slots were a bit tight and we actually had to sand some of them for them to finally slide over each other and interlock correctly. some of the paint chipped off along the edges of these slots because of how tight they were. i touched them up with a white paint pen and it's not noticeable from afar. quite heavy and sturdy. definitely requires two to hang because of the awkwardness and weight balance of the shelf. the hanging system leaves something to be desired. it comes with these little adhesive foam tabs that you're supposed to place into the hanging slots and then press against the wall. in theory you then pull the shelf back and the tabs stay on the wall and give your perfect markers for inserting screws into the wall. except the shelf is quite heavy and is not the easiest to balance so we had to attempt this process twice before we managed to make it work well enough to hang.