Abstract: A boltless sheet metal cabinet assembly having a top wall, a bottom wall, a back wall, and opposed side walls, a flange on the back longitudinal edge of each side wall, that forms a U-configuration, a flange on each of the side edges of said back wall that forms a U-configuration, the flanges on the back wall and the flanges of the side walls being adapted to interlock with each other, the front longitudinal edge of each side wall being formed with a channel, rigidifying top and bottom bars having stab connectors at each of their ends for entry into the channel of one of the side walls whereby to extend between the side walls and space them apart, the top wall having downwardly extending flanges, the flange along the front edge of the top wall adapted to snap over the lower portion of the rigidifying top bar, the flange along the back edge of the top wall having a U-configuration, the upper edge of the top wall having a flange that forms a U-configuration that is adapted to interlock with the flange on the ba