A hanging system and a method of hanging a support structure from a support surface. The hanging system may include a support structure and a hanging bracket for hanging the support structure from a support surface such as a wall. The support structure may include a mounting groove that accepts a portion of the hanging bracket to facilitate the coupling therebetween. The support structure may be able to slide side-to-side along the support surface while remaining coupled to the hanging bracket. The hanging system may alternatively, or additionally, include a reinforcement bracket. The reinforcement bracket may serve the dual purpose of holding the various mitered components of the support structure together and facilitating the hanging of the support structure from the support surface.