I bought these shelves to put above a closet door in my sewing studio, to display my Madam Alexander Dolls.  They are great, they are light weight and easy to put up.  The mounting board has numerous holes so that you can at least hit a stud with one of them.  This is perfect for what I wanted, but I would not put them where they get a lot of use.  They are light weight and would not hold up to people or children leaning on them.  If you need display space they are perfect.