Very solid! I put it up with a bit of difficulty. I blame it on my old house with uneven walls. The wall anchors supplied to me kept breaking so I opted to buy the same type of anchors, but made of zinc. This may not be an issue for people with more modern houses. I suspect there may be plaster behind my dry walls. 

The material is very solid and scratched very little during installation. Used the provided marker to cover up the scratches. I did not install this wall-to-wall. I used the extra piece (shown in pictures to be the 3rd clothes bar) as a 4th shelf of the tower. Overall, I'm very happy with this product. Installation should be a breeze with skilled hands, make take more time otherwise.