A corner bracket structure for fastening together a pair of panels includes a first elongated member having convex projections extending from one side thereof. A second elongated member has a concave elongated channel extending from one side thereof. The elongated channel includes retaining regions for capturing the projections. The retaining regions are spaced apart from each other by recessed regions that initially receive the projections. The projections are inserted into recessed regions, and slid into the retaining regions to form a semi-hinged connection.