A wall hanging system for hanging an article from a support surface such as a wall. The article may have a first mounting channel that is elongated along a first channel axis. The system includes a surface mounting element that is configured to be coupled to the support surface with a portion of the surface mounting element protruding from the support surface. Furthermore, there is a cam lock slidably coupled to the article along the first mounting channel. The cam lock has a longitudinal axis and a receiving cavity that is configured to receive a distal portion of the portion of the surface mounting element. The cam lock is configured to be locked to the surface mounting element by rotating the cam lock about the longitudinal axis while the distal portion of the portion of the surface mounting element is located within the receiving cavity of the cam lock.