The back board seems flimsy as certain area have some cracks.  I wouldn’t put a lot of heavy things on top of it after the install. A couple area on the mantel dinged. I guess I need to use paint to patch them up.  Like the selection of the sizes and colors. Not many vendors have these many choices which is super good.  Easy to install, my husband did it by himself. No hardwares came with it, you will need to supply yourself. Overall happy about the purchase.