Abstract: A folding work surface having self-locking, pivotal support arms for selective support and storage upon a vertical wall. A triangular pivot configuration comprising each support arm permits the work surface to be secured upon a wall with a minimum of effort and a maximum of structural reliablilty. A pair of stationary wall brackets pivotally connect the work surface and support arms one to the other and to the wall. Each pivot arm includes an elongated primary support strut pivotally connected to the wall bracket, and a shorter locking arm pivotally coupled to the support strut. The locking arm pivots inwardly to laterally engage the work surface, resting thereagainst in the open, supported position. In the collapsed position, the triangular pivot configuration permits the support arms to fold against the work surface to facilitate storage.