There is a seam in the middle of the vertical poles, where you screw the top half into the bottom half of the frame. This is not represented in the product photos. Really wish it was one seamless piece. 

Put this together by myself and it definitely would have been easier with a second set of hands, especially on the first couple shelves. It was a balancing act!

Shelf comes with drywall anchors and it feels solid once anchored to the wall, however I don't have children or pets - you may want additional safety measures if you do.