Abstract: An arrangement for mounting a removable accessory such as a drawer unit to the underside of a work surface without the use of tools. A pair of front and rear slot and projection couplings are used to mount the accessory on the underside of the work surface, and a spring automatically locks the accessory to the work surface when the projections are fully engaged with the slots.

Abstract: A drawer unit having a lock mechanism for controlling a plurality of drawers. The lock mechanism employs a vertically elongated lock bar having a plurality of vertically spaced locking tabs mounted thereon at selected intervals, which lock tabs are permanently fixed to the bar. The drawer unit employs a cabinet which mounts therein the plurality of drawers, which plurality can vary in number and/or size to permit the user to select the optimum drawer arrangement. Irrespective of the number and/or sizes of drawers selected, the same lock bar cooperates with and lockingly holds all of the drawers in a closed locked position when activated, without requiring any rearrangement of the lock bar. An open drawer can also be readily moved into its closed position without undue effort since the lock bar is displaced against the urging of a spring so as to permit the lock stop on the activated drawer to move therepast.