Provide maximum storage space for backpacks and other items with these stacking lockers. Different locks and keys are provided for secured lockers. Individual lockers are 10-1/2"W x 12-1/2"D x 20"H. Stacked lockers must be fastened to a wall. Note: The units have four holes in the top of the unit for fastening stacked lockers. Constructed of double-sided freckled gray laminate with colored TRUEdge.