Creat a customized design to meet your needs with these interlocking modular binsTransparent, tilt-out system with removable bins sits on a desktop or hangs on a wall. Modular units feature an interlocking design that allows you to mix and match bins to create a system that meets your needs.Case is made of high-impact black polystyrene, while the bins are crystal clear styrene for quick recognition of contents. Bins are easily removed from the case, tilt forward for access, and close with the touch of a finger. Choose from 4 sizes: 3 bins, 4 bins, 5 bins, and 6 bins.Bin labels are also included.Case back has 2 keyhole-style holes for optional wall mounting. Hardware is included.Overall dimensions: Part Number # of Bins H x W x D 20304OP 3 9 1/2 x 23 5/8 x 7 1/4" 20404OP 4 8 1/8 x 23 5/8 x 6 5/8" 20504OP 5 6 1/2 x 23 5/8 x 5 1/4" 20604OP 6 4 1/2 x 23 5/8 x 3 5/8"