The amount of weight a floating shelf can hold varies depending on things like the quality of the installation, the structure of the wall the shelf is attached to, size of the shelf, and how the weight is distributed. Our wooden floating shelves are very strong and can hold a lot of weight. We've put 150lbs on one shelf and it held fine. That doesn’t mean a floating shelf attached to your wall will hold the same, it might hold twice that much or nothing at all. Our floating shelves should be professionally installed. Your contractor will be able to give you a good idea of what a floating shelf attached to your wall can hold once he has seen the installation information.