I got 4 of the 36 size in white, and staggered them on one wall in my office.  They look great.  I use them for family pictures.  Although they appeared to be packaged very securely, one shelf was damaged in 3 places,  But with the help of glue and white shoe polish, it looks fine.  Except for the damage, the overall product quality is very good.  The installation was more of a challenge than I expected.  However, if I had another person helping me, it would have been much easier.  I am very happy with these shelves.