Apparatus for securing a rod type shelf to a vertical support such as a wall including a support bracket having a first end adapted to be secured to the vertical support at a point spaced vertically from the attachment of a rearward rod of the shelf to the vertical support structure and a second end for lockingly engaging and supporting a front support rod of the shelf. The second end includes a support face for supporting the shelf against rotation in a first direction towards the vertical support structure and a gripping portion for engaging the front support rod of the shelf and inhibiting rotation of the shelf in a second direction towards the vertical support structure. The gripping portion preferably includes at least one rod receiving slot so that it can be disposed in straddling relation to a tranverse rod of the shelf or can be disposed intermediate adjacent transverse rods of the shelf.